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Acid-Base Properties of Salts

Acid-Base Properties of Salts. Acid-Base Properties of Salts. These salts simply dissociate in water: KCl(s)  K + (aq) + Cl - (aq). Acid-Base Properties of Salts. The basic anion can accept a proton from water:.

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Acid-Base Properties of Salts

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  1. Acid-Base Properties of Salts

  2. Acid-Base Properties of Salts These salts simply dissociate in water: KCl(s)  K+(aq) + Cl-(aq)

  3. Acid-Base Properties of Salts The basic anion can accept a proton from water: C2H3O2- + H2O  HC2H3O2 + OH- base acid acid base

  4. Acid-Base Properties of Salts The acidic cation can act as a proton donor: NH4+(aq)  NH3(aq) + H+(aq) Acid Conjugate Proton base

  5. Acid-Base Properties of Salts • IF Ka for the acidic ion is greater than Kb for the basic ion, the solution is acidic • IF Kb for the basic ion is greater than Ka for the acidic ion, the solution is basic • IF Kb for the basic ion is equal to Ka for the acidic ion, the solution is neutral

  6. Acid-Base Properties of Salts Step #1: AlCl3(s) + 6H2O  Al(H2O)63+(aq) + Cl-(aq) Salt water Complex ion anion Step #2: Al(H2O)63+(aq)  Al(OH)(H2O)52+(aq) + H+(aq) Acid Conjugate base Proton

  7. Effect of Structure on Acid-Base Properties Hypochlorous acid Chlorous acid Chloric acid Perchloric acid Increasing Acidity

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