Why acetic acid act as a acid in ammonia solution??
Answers
Answer:
Really acetic acid acts as a strong acid in a liquid ammonia but in aqueous medium it acts as a weak acid and the following concept can be explained on the basis of solvent system of acid and base, i.e H2O +H2O →H3O+ +OH- and NH3 +NH3→NH4+ NH2– ,an acid is stronger in aqueous medium if it increases the concentration of hydronium ion,a base is stronger if it increases the conc of hydroxide ion,an acid and a base will be stronger if it increase the conc of NH4+ and NH2-ions respectively I.e differentiating effects of solvents,strength of acid or base in different solvents differs due to different ionisation extent in aqueous medium conc of H3O+ ion is less and in liquid ammonia solvent conc of NH4+ ion is more thus acetic acid acts as a strong acid in liquid ammonia .As we can not classify any individual isolated acid or base but we can measure the strength of acid in front of a base,so relative strength of acids and bases indicate one is acid relative to a base and one is base relative to an acid, Acetic acid behaves as an strong acid in liquid ammonia because ammonia has one l.p of electron on more electronegative nitrogen atom and l.p of electron on nitrogen attracts eagerly a proton from acetic acid to form ammonium ion which is more stabilised by hydrogen bonding with water molecules.
Explanation:
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Answer:
Acetic acid behaves as an strong acid in liquid ammonia because ammonia has one l.p of electron on more electronegative nitrogen atom and l.p of electron on nitrogen attracts eagerly a proton from acetic acid to form ammonium ion which is more stabilised by hydrogen bonding with water molecules.