Which of the following best describes what will happen when a solution of AgNO 3
ID: 493473 • Letter: W
Question
Which of the following best describes what will happen when a solution of AgNO3 is slowly added to a saturated solution of silver acetate, CH3COO-Ag+, without changing the volume significantly?
CH3COOAg (s) <=> CH3COO- (aq) + Ag+ (aq)
Some of the solid silver acetate will dissolve.
The concentration of acetate ion will increase.
Some solid silver acetate will precipitate.
The concentrations of acetate ion and silver ion will both increase.
The addition of AgNO3 will have no effect on the position of the equilibrium.
Explanation / Answer
added AgNO3 will decompose as:
AgNO3 (s) --> Ag+ (aq) + NO3 -(aq)
for equilibrium,
CH3COOAg (s) <=> CH3COO- (aq) + Ag+ (aq),
It is like adding a product (Ag+)
So, equilibrim will shift to reactant side and more CH3COOAg will be precipitated
Answer: Some solid silver acetate will precipitate.
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