First slide

Solubility product(KSP)

Question

The solubility product of a sparingly soluble salt AB at room temperature is $1.21 \times 10^{- 6} .$ Its molar solubility is

Easy

A

$1.21 \times 10^{- 6}$
B

$1.21 \times 10^{- 3}$
C

$1.1 \times 10^{- 4}$
D

$1.1 \times 10^{- 3}$

Solution

AB is a binary electrolyte.
$S = \sqrt{K_{sp}} = \sqrt{1.21 \times 10^{- 6}} = 1.1 \times 10^{- 3} M$

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