Chapter 17, Problem 3SEPP

Aqueous acid reacts with carbonate Jons to produce carbonic acid, which produces carbon dioxide. A 1.0-L saturated silver carbonate solution at $\text{5°C}$ is treated with enough hydrochloric acid to consume all the carbonate in solution. The carbon dioxide generated is collected in a 19-mL vial and exerts a pressure of 114 mmHg at $\text{25°C}$.

At $\text{25°C, the }{K}_{sp}$ of silver carbonate is $8.1\times {10}^{-12}$. Based on this and the answer to question 1, what can be said about the dissolution of silver carbonate?

a)

It is endothermic.

b)

It is exothermic.

c)

It is neither exothermic nor endothermic.

d)

It produces hydrogen gas.