A generic salt, AB2, has a molar mass of 189 g/mol and a solubility of 3.80...

A generic salt, AB2, has a molar mass of 189 g/mol and a solubility of 3.80 g/L at 25 °C. What is the Ksp of this salt at 25 °C?

Expert Solution

Solubility in mol/L = 3.80/189 = 0.0201 mol/L

AB2 <=====> A2+ + 2B-

if solubility is "s" s s 2s

So, Ksp = [A2+][B-]²

Ksp = [s][s]²

Ksp = s³

Ksp = [0.0201]³

Ksp = 8.12 X 10^-6

queen_honey_blossom answered 3 hours ago

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