Calculate the silver ion concentration in a saturated solution of silver(I)sulfate (K_sp = 1.4 × 10^-5).

Question

Quizplus · Accepted Answer

The Ksp expression for silver(I)sulfate is:
Ksp = [Ag+][SO42-]
Since the solution is saturated, we can assume that the concentration of Ag+ ions in the solution is equal to the solubility of silver(I)sulfate. Therefore, we can write:
Ksp = [Ag+]2
1.4 × 10-5 = [Ag+]2
[Ag+] = √(1.4 × 10-5) = 3.0 × 10-3 M = 3.0 × 10-2 mM

Note that the answer is given in mM (millimolar) rather than M (molar) as stated in the answer choices.

Calculate the Silver Ion Concentration in a Saturated Solution of Silver(I)sulfate