The reason for increased solubility of Ag 3 PO 4 in water than the value of its solubility calculated using K sp value has to be explained. Concept introduction: The solubility of insoluble salts containing anions (conjugate base of a weak acid) such as hydroxide, acetate, carbonate, phosphate, and sulfide is greater than the value calculated using K sp value. This is because the anion undergoes hydrolysis that is it reacts with water (acid-base reaction). This decreases the concentration of the anion in the solution and as result the reaction equilibrium shifts to right-hand side or become product favored. Thus the solubility of the salt increases.

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Chapter 17, Problem 115SCQ

Interpretation Introduction

Interpretation:

The reason for increased solubility of Ag3PO4 in water than the value of its solubility calculated using Ksp value has to be explained.

Concept introduction: The solubility of insoluble salts containing anions (conjugate base of a weak acid) such as hydroxide, acetate, carbonate, phosphate, and sulfide is greater than the value calculated using Ksp value. This is because the anion undergoes hydrolysis that is it reacts with water (acid-base reaction). This decreases the concentration of the anion in the solution and as result the reaction equilibrium shifts to right-hand side or become product favored. Thus the solubility of the salt increases.

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