CHEMISTRY · Multi-part · AP · Chemistry · Acids and Bases · Acids and Bases
Problem
A chemist prepares five separate beakers, each containing exactly 0.010 mol of one of the solid salts listed in the table below and 100 mL of distilled water at 25 °C. After vigorous stirring, all systems are allowed to reach equilibrium with any excess solid remaining.
Salt (formula)
Relevant acid–base data for the conjugate acid/base pair
(a) Identify every salt in the list whose molar solubility is expected to increase upon addition of the acid. Provide your selections by writing the salt numbers only.
(b) For each salt you selected in part (a), write the balanced chemical equation that accounts for the observed increase in dissolved ions after the acid is added.
(c) For the salts you did not select in part (a), give one concise reason for the lack of pH-dependent solubility in each case.