MolSynapsequestion bank

MolSynapse / Question bank / Ionic Equilibrium I / Common ion effect and precipitation

NEET levelSingle correct optionDifficulty 1 of 3ie170

A precipitate of a sparingly soluble salt $AB$ forms from solution when

Athe ionic product is less than $K_{s p}$
Bthe ionic product $[A X^{+}] [B X^{-}]$ exceeds $K_{s p}$
Cthe ionic product is exactly 1
D $[A X^{+}]$ is greater than $[B X^{-}]$

Answer: B

Precipitation occurs when the ionic product (reaction quotient) exceeds the solubility product, because the solution is then supersaturated. When it is less than

K_{s p}

the solution is unsaturated and nothing precipitates.

Practice Ionic Equilibrium I More on Common ion effect and precipitation

Previous questionNext question

More questions on Common ion effect and precipitation