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For each of the salts on the left, match the salts on the right that can be comp

ID: 500412 • Letter: F

Question

For each of the salts on the left, match the salts on the right that can be compared directly, using Ksp values, to estimate solubilities. (If more than one salt on the right can be directly compared, include all the relevant salts by writing your answer as a string of characters without punctuation, e.g, ABC.) 1. lead sulfide 2. silver phosphate

A. Al(OH)3 B. BaSO3 C. FeCO3 D. CaSO3

Write the expression for K in terms of the solubility, s, for each salt, when dissolved in water. lead sulfide, silver phosphate

Explanation / Answer

Based on Ksp values

1. A

Lead sulphide is nearly insoluble like Al(OH)3.

2. B,D

Solubility of silver phosphate is comparable to BaSO3 and CaSO3.

Expression of Ksp

For lead sulphide:- K=[Pb2+][S2-]

Silver phosphate:- K=[Ag+]3[PO43-]