Acid Dissolves Some Solids, Not All

You'll learnwhy lowering the pH dissolves a salt whose anion is basic, and why it does nothing at all to a salt whose anion came from a strong acid.

Drop the pH of a saturated fluoride solution and the undissolved solid starts to disappear. Do the same to a saturated chloride and nothing happens. Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · REMOVE A PRODUCT → SHIFT RIGHT · WEAK-ACID ANIONS ONLY · v2

a proton can reach a basic anion · and nothing else

Before you start

What you're looking at

Two saturated beakers, each with undissolved solid on the floor and its dissolved ions above it.

The question

The same acid goes into both, so why does only one of the solids dissolve further?

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