ch3oh dissolve in water equationkelly services substitute teacher pay orange county

Chemistry 1 Answer zhirou Mar 16, 2018 N H 4OH (aq) N H + 4 (aq) +OH (aq) Explanation: When ammonium hydroxide is dissolved in water, the ion-water attraction overcomes the attraction between ions, so it dissociates into the The answer is that Methanol is soluble in water. positive charge comes to more electroneegative oxygenCharge distribution is highpositive and negative charges on the same species National Center for Biotechnology Information. Phenomenon after CH3OH (methanol) reacts with HCl (hydrogen chloride) This equation does not have any specific information about phenomenon. What is The Dissociation equation Of Water And CH3OH? ethyl alcohol is a covalent compound which is separated by the polar nature of water into separate molecules. Webwater Answer: According to like dissolves like: C2H5OH is a polar molecule, while C6H12 is a nonpolar molecule, thus, C2H5OH is not soluble in cyclohexane, but it is soluble in water (water is a polar molecule). National Institutes of Health. Correct answer and explaining. C. Each NaCl molecule is surrounded by water molecules. when methanol, ch3oh, is dissolve in water, a nonconducting solution reslults. In our study, two limiting approaches, perfect liquid-phase mixing and pure diffusion, are adopted to pursue the water-absorption analysis. Yes, it is. Q: 5.00 mL of 1.00 M HCl is added to a flask containing antacid powder dissolved in water. WebCall Us Today! Webch3oh dissolve in water equationdesigner sale men's shoes. However, it does not dissociate in solution hence only one particle is observed in solution. a. Chegg survey fielded between April 23-April 25, 2021 among customers who used Chegg Study and Chegg Study Pack in Q1 2020 and Q2 2021. True or False. When an ionic compound dissolves in water, it dissociates into its ions. See answer (1) Best Answer. Remove a hydrogen particle from waters formula and add it to ammonias to form the product formulas. Crosby, Texas Obituaries, Remove a hydrogen particle from waters formula and add it to ammonias to form the product formulas. Covalent bonds occur when two atomsin this case oxygen and hydrogenshare electrons with each other. It will remain as molecules. Fist consider the reaction of methanol with water along with their p K a values. Is Clostridium difficile Gram-positive or negative? Solution This problem requires the application of Henrys law. The properties that depend on the number of particles in solution are known as colligative properties. CH3OH + O2 = CO2 + H2O Answer: 2 CH3OH + 3 O2 = 2 CO2 + 4 H2O I balanced all the others just fine. by June 7, 2022. WebExplanation:When methanol, CH 3 OH , is dissolved in water, a nonconducting solution results. So yes CH3OH(Methanol) is water soluble. Ethanol has a 2 carbon chain and a OH group. For an introductory, one or two semester, or sophomore-junior level course in Probability and Statistics or Applied Stat In this case, you just need to observe to see if product substance H2O (water), appearing at the end of the reaction. What type of intermolecular forces are Persent in CH3OH? Ch3oh intermolecular forces has hydrogen bonding, dipole dipole attraction and London dispersion forces. Hello, reders welcome to another fresh article on textilesgreen.in. today we will discuss about ch3oh intermolecular forces. For an introductory, one or two semester, or sophomore-junior level course in Probability and Statistics or Applied Stat Waters formula is H2O. Thioacetamide decomposes in hot water to produce hydrogen sulfide, which is the active reactant in the first step of this reaction. Older formulations would have written the left-hand side of the equation as Alcohols are able to dissolve in water due to the alcohol group at the end, but as the carbon chain grows longer or larger (due to branching), solubility decreases. WebIn this case, the water molecule acts as an acid and adds a proton to the base. These separate molecules are not charged and so do not conduct electricity. Predict the reactants of this chemical reaction. A compound that can donate protons are considered acids but here in Methanol; as a result, water is a better proton donor, which makes Methanol a weak acid. Alcohols are able to dissolve in water due to the alcohol group at the end, but as the carbon chain grows longer or larger (due to branching), solubility decreases. Only electrovalent or ionic substances are composed of ions. June 1, 2022. by the aicpa statements on standards for tax services are. First, understand the essential difference between solids, liquids and gases. The particles (atoms, molecules or ions as the case may be) in solids The solubility of nitrogen in water is 8 10 -4 mol/L at 0oC when the N 2 pressure above Therefore, methanol is more polar than butanol. A solution is prepared by mixing 1.00g ethanol (C2H5OH) with 100.0g water to give a final volume of 101.mL. H2o wireless login. Methanol (CH3OH) is more soluble in water than propanol (CH3CH2CH2OH) because with the increase in number of carbon atoms the solubility decreases due to increase in molar mass. Substitute the known values to calculate the molarity: molarity = 5 / (1.2 * 36.46) = 0.114 mol/l = 0.114 M. You can also use this molarity calculator to find the mass concentration or molar mass. Write the balanced H2o polar or nonpolar. Solution for 25. Because it have a OH attached to it which can easily make hydrogen bond with water molecules therefore dissolving it in water Ammonias formula is NH3. Prospa Customer Login, Which of the following is a means of creating a buffer of HCO/NaHCO? CH3OH(l) CH3OH(aq) O2(g) O2(aq) At 0 C and 4.00 atm, how many grams of O 2 dissolve in 1 L of water? Therefore, if we were to add dissociated hydrogen and CO to the basic equation (AI-1), the hydrogen and CO would need to reflect t Each sodium ion is surrounded by chloride ions. Each compound is soluble in water. For alcohols, it is known that as the number of carbon chain or skeleton increases the lesser its solubility in that polar solvent. Chapter 1. It does dissolve in water. Well, water is H2o and methanol is CH3OH. National Library of Medicine. Ethanol (ethyl alcohol, C2H5OH) dissolves in water because the partial charges on the H and O atoms in the molecule interacts strongly with the partial charges on the atoms in water. As mass / volume = molarity * Not available for all subjects. If you're struggling with your math homework, our Math Homework Helper is here to help. The molecules remain intact. I know i have to get an equation having trouble doing that!! A solution contains 22.5 g of methanol , CH3OH , dissolved in sufficient water to give a total mass of 105.3 g . Ammonias formula is NH3. In this case, you just need to observe to see if product substance H2O (water), appearing at the end of the reaction. Acetic Acid (CH3COOH)- Acetic Acid is an organic compound with formula CH3COOH.Vinegar is a water solution of acetic acid containing 5-8% of acetic acid by volume. Sometimes small amounts of other metals, such as chromium, molybdenum, or nickel, are added to steel, which makes it even harder, stronger, or more rust-resistant than iron. Can You Break A Bone In Your Bum Cheek, It forms hydrogen bonds with itsel A) CH3CO2H(l) H+(aq) + CH3CO2(aq) (The reaction between the two substance shoes that all substances are aqueous and can dissolve in water.) When dissolved in water, a nonelectrolyte does not dissociate to form ions. Methanol (or CH3OH if you prefer), like any alcohol, have polarized molecules. Volunteering; Volunteer Dates; Cost; FAQ; Safety; Apply Now; Projects. Golden Homes Rolleston, The average satisfaction rating for this product is 4.7 out of 5. CH3OH(l) CH3OH(aq) O2(g) O2(aq) >>Basic Science >> Basic Chemistry Basic Chemistry >> CH3OH and HCl both dissolve in water, bu CH3OH and HCl both dissolve in water, bu C. Each NaCl molecule is surrounded by water molecules. How do I determine the molecular shape of a molecule? In the gas phase, water is much less acidic than methanol, which is consistent with the difference in polarizibility between a proton and a methyl group. 0. H2o to go. Facebook Instagram. As water molecules surround Na1 and Cl ions, they dissociate from one another and dissolve completely in the water. Do you know how much it bothered me to memorize like dissolves like H2o just add water cast. First I want to start with an explanation of what solubility actually means. A) Potassium iodide, KI Track your food intake, exercise, sleep and meditation for free. Email today and a Haz representative will be in touch shortly. Methanol is slightly more acidic than water. Adelanto High School Schedule, Yes. Methamphetamine is often dissolved in water (liquefied) for the purposes of transportation. >>Basic Science >> Basic Chemistry Basic Chemistry >> CH3OH and HCl both dissolve in water, bu CH3OH and HCl both dissolve in water, bu As water molecules surround Na1 and Cl ions, they dissociate from one another and dissolve completely in the water. What is the concentration of the hydroxide anion? What is the reflection of the story of princess urduja? Chapter 16, Problem 66QP is solved. It is also known as Wood alcohol or Methyl alcohol. Intermolecular attractions in methanol. When dissolved in water, a nonelectrolyte does not dissociate to form ions. the balanced chemical equation of Na2SO4 when dissolved in water is given as below.Na 2 SO4 + H2O -> Na 2 O + H2 SO4 . WebThe compound aluminum acetate, AI(CHCOO)} is soluble in water Write the net ionic equation for the dissociation reaction that occurs when solid Better than just an application Better than just an app, our new platform provides WebIs ch3oh a strong electrolyte - Strong electrolytes ionize completely (100%), while weak electrolytes ionize only partially (usually on the order of 1-10%). National Library of Medicine. What are the differences between a male and a hermaphrodite C. elegans? As water is polar it attracts OH group. When methanol,CH3OH, is dissolved in water, a nonconducting solution results. Like if you divide fractions it will also give you the decimal form of the answer, please INCREASE the "Favorites"' capacity, if I want it to simplify a fraction, it locks up. These charged particles conduct electricity. Methanol is a highly polar substance, so its soluble in water. sinastria di coppia karmica calcolo; quincy homeless shelter; plastic bags for cleaning oven racks; claudia procula death; farm jobs in vermont with When dissolved in water, a nonelectrolyte does not dissociate to form ions. The ions are separated from each other, and are free to move randomly through the solution, surrounded by a crowd of water molecules. Enter either the number of moles or weight for one of the compounds to compute the When it donates protons to water, it acts as an acid. The longer the alkyl chain, the less soluble in water is the alcohol. Answer (1 of 6): Its classified in alcohol. Methanol (or CH3OH if you prefer), like any alcohol, have polarized molecules. A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? when methanol, ch3oh, is dissolve in water, a nonconducting solution reslults. But the methyl group is smaller than the butyl group and methanol is soluble in water in all proportions. Most molecular substances do not dissociate in water. Write the balanced Wiki User. National Library of Medicine. Phenomenon after CH3OH (methanol) reacts with O2 (oxygen) This equation does not have any specific information about phenomenon. When an ionic compound dissolves in water, it dissociates into its ions. Yes, it is. When CH3OH is dissolved in water how many particles are in solution? Erbarme Dich Analysis, And according to the definition of acids, a compound that willingly loses a proton is considered acid. Enter either the number of moles or weight for one of the compounds to compute the 6g of Ch3OH are dissolved in 27g of water at 30 degrees C. Given that the vapor pressure ofwater at 30 degrees C is 31.82mmHg, the vapor pressure of the solution is?moles of CH3OH = 6/(12+3+16+1) thus capable of experiencing relatively strong dipole-dipole attraction to water molecules. Q: Why is the vapour pressure of acetone higher than the vapour pressure of ethanol at room temperature? Because while acetone can form hydrogen bo When the substance accepts protons from water, as with ammonia, it acts as a base. Correct Answer: Option C Explanation: The reaction of borax in water is as follows: [B4O7]2-+ 7H2O2B(OH) Borax dissolves in water to give alkaline solution. substances, such as CH3OH or O2, do not dissociate into ions in aqueous solution. Spencer Taylor Obituary, H2o cast. I know i have to get an equation having trouble doing that!! Methanol exhibits hydrogen bonding, and all three of the van der Waals attractions: Keesom forces (dipole-dipole) attraction, Debye forces (induced attraction) and London dispersion forces (which all molecules exhibit). Get an answer for 'The equation for NaOH dissolving in water is NaOH(s)--->Na+(aq) + OH-(aq) Rewrite to include the word "energy"' and find homework help for other Science questions at eNotes positive charge comes to more electroneegative oxygenCharge distribution is highpositive and negative charges on the same species when acetic acid, ch3cooh, diisolves in water, the solution is weakly conductng and acidic in nature. Answer to When methanol,CH3OH, is dissolved in water, a nonconducting solution results. Yes. A: ->Water is a polar solvent hence polar substances are more soluble in water we can find most Q: The isotope nickel-63 has a half-life of 100 years. Published by at 07/06/2022. The strongest intermolecular forces in methanol are hydrogen bonds ( an especially strong type of dipole-dipole interaction). Basis Independent Silicon Valley Sara Kolb, What do the C cells of the thyroid secrete? Generically speaking, polarized substances tend to mix with other polarized substances, the same occurring for non-polarized ones (like oil, for instance). Routing number of commercial bank of Ethiopia? A) Potassium iodide, KI When the substance accepts protons from water, as with ammonia, it acts as a base. The Hydrochloric acid dissolves as ions which conduct electricity being charged particles. National Institutes of Health. Webch3oh dissolve in water equationwhat else looks like a hickey. Each sodium ion is surrounded by chloride ions. Actually, it does, it just conducts electricity to a very very small extent Be careful about "black and white" statements like "this doesn't conduct electricity". Why does methanol (CH3OH) have only hydrogen bonds and dispersion forces present? Figure 3.08 NaCl(s) Na+(aq) + Cl(aq) 12 Most molecular substances do not dissociate in water. The missing The chemical formula for Borax is (Sodium tetraborate decahydrate) is Na 2 B 4 O 7 . It DOES dissolve or mix with water. So yes CH3OH(Methanol) is water soluble. Methanol is miscible with water in ALL proportions. 21. Ethanol has a 2 carbon chain and a OH group. CH3OH, CH3CO2H and CH3NH2 are polar and can participate in hydrogen- bonding interactions with water, which would make these compounds quite water- soluble. Why does methanol (CH3OH) have only hydrogen bonds and dispersion forces present? Wiki User. The ethanal or ethyl alcohol dissolves as a molecule which does not conduct electricity lacking any charged particles. ^ 2. : ottawa; tempus labs ipo; > monoliths appearing 2022 > ch3oh dissolve in water equation. B. satisfaction rating 4.7/5 Maybe the process of dissolution of $\\ce{KI}$ in $\\ce{CH3OH}$ is energetically favorable, maybe it isn't (the latter seems more likely to me); that's irrelevant. But to say that they "do not conduct" electricity implies a conductivity of zero. H2o polar or nonpolar. Q: In the laboratory you dissolve 22.7 g of potassium bromide in a volumetric flask and add water to a A: Click to see the answer Q: Correctly label each chemical below as acid, conjugate acid, base or conjugate base PH3 (g) + Methanol and ethanol are infinitely miscible in water; propanol and butanol have limited solubility. Clear up mathematic problems Math is often viewed as a difficult and boring subject, however, with a little effort it can be easy and interesting. Solution This problem requires the application of Henrys law. However, some of the chemicals that make up gasoline can dissolve easily in water. Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. Methanol exhibits hydrogen bonding, and all three of the van der Waals attractions: Keesom forces (dipole-dipole) attraction, Debye forces (induced attraction) and London dispersion forces (which all molecules exhibit). CHOH (s) + HO (l) Solve math questions. About Us; Photos & Videos; Reviews; Contact Us; Volunteering. 6. CH3OH is polar and can participate in hydrogen- bonding interactions with water, which would make these compounds quite water- soluble. Generically speaking, polarized 6g of Ch3OH are dissolved in 27g of water at 30 degrees C. Given that the vapor pressure ofwater at 30 degrees C is 31.82mmHg, the vapor pressure of the solution is?moles of CH3OH = 6/(12+3+16+1) Which of these compounds would you expect to be least soluble in water? revere, ma condo foreclosures; don wilson obituary shelby nc About Us; Photos & Videos; Reviews; Contact Us; Volunteering. Write down the formulas of the compounds formed and the hydrocarbon combustion reaction equation. 1.555.555.555 | balboa productions net worth. In fact, it is infinitely soluble (miscible) in water, due to its strong ability to form hydrogen bond with water, in addition to its not-so-big alkyl group (alcohol with bulky alkyl group cannot dissolve in water so well). Christopher Plummer Grandson, Who is Jason crabb mother and where is she? H2o wireless login. Webwater Answer: According to like dissolves like: C2H5OH is a polar molecule, while C6H12 is a nonpolar molecule, thus, C2H5OH is not soluble in cyclohexane, but it is soluble in water (water is a polar molecule). Explain why CH 3 CH 2 CH 3 is insoluble in water, but CH 3 CH 2 OH is soluble. Answer (1 of 6): Its classified in alcohol. substances, such as CH3OH or O2, do not dissociate into ions in aqueous solution. Math is often viewed as a difficult and boring subject, however, with a little effort it can be easy and interesting. Routing number of commercial bank of Ethiopia? Miller & Freund's probability and statistics for engineers [Ninth edition] 9780321986245, 1292176016, 9781292176017, 0321986245. Sodium chloride (NaCl) dissolves when water molecules continuously attack the NaCl crystal, pulling away the individual sodium (Na +) and chloride (Cl ) ions. It has a pungent smell and a sour taste. Deionised water (18 MU cm) was achieved electrolyte and making the electropositive carbon atoms the by Millipore (Bedford, MA, USA) and used in all experiments. Yes. Yes. HCl(aq) 2. Visit BYJU'S for more content. Isopropyl alcohol is soluble in water because it can form strong hydrogen bonds to the water. First I want to start with an explanation of what solubility actually means. You can specify conditions of storing and accessing cookies in your browser. Consider a gas mixture of N2 and CO2, in which case is the CO2 most soluble? Deal with mathematic equation. In this case, you just need to observe to see if product substance H2O (water), appearing at the end of the reaction. Which equation best represents the behavior of acetic acid, CH3CO2H, in water? More interaction means more solubility. Methanol is soluble in water or to be more precise, we can say that methanol is miscible (mixes completely) in water. To Learn about the structure of Acetic acid, its preparations , chemical, physical properties, uses and FAQs. Click to see full answer. The equation for the dissociation of acetic acid, for example, is CH3CO2H + H2O CH3CO2 + H3O+. Let us understand how it occurs. Q: In the laboratory you dissolve 22.7 g of potassium bromide in a volumetric flask and add water to a A: Click to see the answer Q: Correctly label each chemical below as acid, conjugate acid, base or conjugate base PH3 (g) + 1 Assignment 1. CH3OH. With the hydrophilic group at the end (-OH) having a stronger force than the hydrophobic chain (CH3CH2-), it interacts with water and dissolves in it. Explain why CH 3 CH 2 CH 3 is insoluble in water, but CH 3 CH 2 OH is soluble. So helpful, which is the best part, because it's teaching you while guiding you to the answer. Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. Please correct your reaction or click on one of the suggestions below: CH3OH + H2O = CO2 + H2 CH3OH + H2O = H + HCO2H Instructions and examples below may help to solve this problem You can always ask for help in the forum Get control of 2022! See answer (1) Best Answer. Intermolecular attractions in methanol. Substitute the known values to calculate the molarity: molarity = 5 / (1.2 * 36.46) = 0.114 mol/l = 0.114 M. You can also use this molarity calculator to find the mass concentration or molar mass. What did the Nazis begin using gas chambers instead of mobile killing units and shooting squads after a while. Is CH3OH (Methanol) soluble or insoluble in water? c) Calculate the masses of hydrocarbon and carbon dioxide formed. As water have its property of like dissolves like" and is a polar molecule it dissolves methanol because methanol is also a polar substance and ca WebNote: major chemical species are those present in concentrations greater than 10-6 /molL. Categories . An example, using ammonia as the base, is H2O + NH3 OH + NH4+. Determine the molal concentration of the said solution. The conjugate acid to methanol H3COH would be the methyloxonium ion H3COH2+, which is a strong acid. Chemistry. Methanol exhibits hydrogen bonding, and all three of the van der Waals attractions: Keesom forces (dipole-dipole) attraction, Debye forces (induced attraction) and London dispersion forces (which all molecules exhibit). How does Charle's law relate to breathing? When an ionic compound dissolves in water, it dissociates into its ions. This is possible mainly because of hydrogen bonding. Visit BYJU'S for more content. About Us. When acetic acid, HC2H3O2, dissolves in water, the solution is weakly conducting and acidic in nature. Chemistry. Clear up mathematic problems Math is often viewed as a difficult and boring subject, however, with a little effort it can be easy and interesting. If we take Methanol (CH3OH), it has a strong hydrogen bonding force acting between its molecules. H2o caliber. do all ysl bags come with authenticity cards, south alabama track and field scholarship standards, parexel clinical research associate salary near berlin, Show My Email Address And Password For Gmail, Praising God In Difficult Times Verses Kjv. 16g of Ch3OH are dissolved in 27g of water at 30 degrees C. Given t hat the vapor pressure of water at 30 degrees C is 31.82mmHg, the vapor pressure of the solution is? In the laboratory, you dissolve 12.6 g of barium hydroxide in a volumetric flask and add water to a total volume of 375 mL. Very good and reccomend for those who study or need help. Ethanol has a 2 carbon chain and a OH group. Explain mathematic problem Math can be a difficult subject for some students, but with a little patience and practice, it can be mastered. water. In this instance, water acts as a base. Weegy: CH3OH is an example of a FUNCTIONAL hydrocarbon. User: Vinegar is an example of a/an ____. a. alcohol c. amine b. carboxylic acid d. methyl Weegy: Vinegar is an example of a carboxylic acid. Weegy: The compound, CH3COOH, is an example of carboxylic acid. 6. WebQuestion: compound formula major species present when dissolved in water methanol CH3OH magnesium sulfate MgSO4 propylene glycol C3H6OH2. Berkeley Carroll Debate, Fist consider the reaction of methanol with water along with their p K a values. CH3OH is the chemical formula for methanol. Input Field 1 of 3. Ch3oh intermolecular forces has hydrogen bonding, dipole dipole attraction and London dispersion forces. Methanol is miscible with water in ALL proportions. These covalent substances do not dissociate into ions because they are not composed of ions. Free Plagiarism Checker. Benzene (C6H6) is nonpolar and would be a solvent for a nonpolar solute. Webwater pipeline project; jordan humphries partner; ikebana classes orange county; sandra peebles es cubana; list of companies that have moved overseas 2020; is tynemouth The density of acetonitrile (CH3CN) is 0.786g /mL and the density of methanol (CH3OH) is 0.791g/mL. Convert the expressions above to obtain a molarity formula. Get an answer for 'The equation for NaOH dissolving in water is NaOH(s)--->Na+(aq) + OH-(aq) Rewrite to include the word "energy"' and find homework help for other Science questions at eNotes Methanol (or CH3OH if you prefer), like any alcohol, have polarized molecules. in your case, it is ethanol. With the hydrophilic group at the end (-OH) having a stronger force than the hydrophobic chain (CH3CH2-), it interacts with water and dissolves in it. The formation of new ordered structures in which both water and methanol molecules take part means that the two liquids mix very little on the microscopic level.. The equation for As water molecules surround Na1 and Cl ions, they dissociate from one another and dissolve completely in the water. In this case, the water molecule acts as an acid and adds a proton to the base. CHOH (s) + HO (l) Deal with math equations; Solve mathematic equations; Solving word questions H2o to go. All other aliphatic alcohols, however, are less acidic than water. what is the link between heredity and drug addiction? CHOH (s) + HO (l) Deal with math equations; Solve mathematic equations; Solving word questions Copy. HCl dissociates into #H_3O^+# and #Cl^-# ions in aqueous solutions, and it fully dissociates (which is why hydrochloric acid is a strong acid). Remember that the coefficients of the reaction equation show not only the number of molecules but also the number of moles. Methanol, CH3OH (32.04 g/mol) has a melting point equal to 176 K and a boiling point equal to 338 K. Using the thermodynamic data below, 1.555.555.555 | balboa productions net worth. Methanol is soluble in water or to be more precise, we can say that methanol is miscible (mixes completely) in water. Compare them. Remember that the coefficients of the reaction equation show not only the number of molecules but also the number of moles. Track your food intake, exercise, sleep and meditation for free. There is no molecule with the formula CH2OH. The chemical you may be looking for is CH3OH, which is known as methanol. In organic Chemistry however, the group R-OH have a name: Hydroxymethyl. (Do search on it) The hydroxymethyl group consists of a methylene bridge (-CH2- unit) bonded to a hydroxy (-OH) group. Generically speaking, polarized substances tend to mix with other polarized substances, the same occurring for non-polarized ones (like oil, for instance). Arrange the following compounds in order of increasing solubility in water: * O2 * LiCl * Br2 * CH3OH Like dissolves like; that is, polar compounds usually are soluble in water and non-polar compounds are not soluble in water.

The Big Saturday Show Fox News Cast Today, Unsolicited Otp From Truecaller, Articles C