pH and Solubility
The pH of a solution can change a salt's solubility. If the salt's anion is basic (it reacts with H⁺), then lowering the pH (adding acid) consumes that anion, and by Le Chatelier the dissolution equilibrium shifts to dissolve more solid. Salts whose anions do not react with H⁺ are largely unaffected by pH.
The trap mismodels the pH effect on solubility — for instance, expecting acid to always help, or missing that only salts with basic (H⁺-reactive) anions become more soluble in acid. Ask whether the anion reacts with H⁺; if so, added acid increases solubility.
The work
3 ways in · any order
Lesson
pH and Solubility
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Lowering pH dissolves salts with basic anions by consuming the anion and shifting the equilibrium. The lesson reasons via Le Chatelier, then closes with a ten-scenario check.
Diagnostic
10-item topic check
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Ten items spanning the Topic 8.11 misconception: the pH effect on solubility mismodeled — which salts become more soluble in acid, and why.
Targeted Practice
Drill a single misconception
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Pick one of the failure modes you missed and drill it on its own. The round is adaptive: two correct in a row clears the misconception and moves you to the next.