Silver acetate ( Ag(CH 3 COO) ) is a slightly soluble salt in aqueous solutions

Question

Silver acetate ( Ag(CH3COO) ) is a slightly soluble salt in aqueous solutions which ionizes according to the equilibrium reaction equation below.

Ag+ (aq) + CH3COO- (aq) <-----> Ag(CH3COO) (s)

Predict whether the following statements (in relation to the above equilibrium reaction in aqueous solution) are "True" or "False".

True False  When adding nitric acid, H+ ions react with acetate ions forming acetic acid and resulting in the dissolution of more silver acetate precipitate.
True False  Silver acetate dissolves less in an aqueous solution containing sodium and acetate ions than in pure water.
True False  Addition of sodium acetate does not have any influence on the solubility of silver acetate in aqueous solutions.
True False  Silver acetate dissolves less in an aqueous solution containing nitric acid than in pure water.
True False  More of the silver acetate precipitate dissolves when sodium acetate is added.

Explanation / Answer

a. true, because

Nitric acid reacts with the acetate ion to produce acetic acid:

CH3COO- + H+-----------------> CH3COOH

As the CH3COOH is weak acid, does not dissociates to CH3COO- and H+. therefore the addition of nitric acid effectively reduces CH3COO-, hence increasing the solubility of CH3COOAg.

b.True.

c. False, because addition of sodium acetate decreases the solubility, due to commen ion effect eulibrium shifted to left side, hence favours as solid (CH3COOAg)

d, False, because H+ ion of nitric acid iin aqueous solution increases solublity, than water.

e.False, when adding sodium acetate eulibrium shifted towords right, solubility decreases.

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