Which salt would you predict to have a solubility in water that increases as the pH decreases?

Name: Which salt would you predict to have a solubility in water that increases as the pH decreases?
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Question

Quizplus · Accepted Answer

Calcium fluoride (CaF2) solubility increases as the pH decreases because fluoride ions (F-) can react with H+ ions in solution to form HF, thereby removing F- from the solution and driving the dissolution reaction of CaF2 forward according to Le Chatelier's principle.

Which Salt Would You Predict to Have a Solubility in Water