AP Chemistrymediummcq1 pt
Which compound is least soluble in water at 25 degrees C?
A.NaNO3
B.AgCl
C.KCl
D.Ba(OH)2
Explanation
Core Concept
Standard solubility rules mark chlorides as soluble except for silver, lead, and mercury(I) salts. Silver chloride qualifies as the exception: the small, highly polarizing Ag+ ion lends the lattice substantial covalent character, so fewer than 0.0002 g dissolves per 100 mL of water. Nitrate salts and potassium chloride follow the reliable solubility rules, and barium hydroxide ranks among the quite soluble hydroxides at several grams per 100 mL.
Correct Answer
BAgCl
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