First slide

Solubility product(KSP)

Question

The solubility of BaSO₄ in water is
$\large 2.33 \times {10^{ - 3}}\,g{L^{ - 1}}$
. Its solubility product will be (molecular weight of BaSO₄ is 233)

Easy

A

$1\, \times \,{10^{ - 5}}$
B

$1\, \times \,{10^{ - 10}}$
C

$1\, \times \,{10^{ - 15}}$
D

$1\, \times \,{10^{ - 20}}$

Solution

$\large BaS{O_4}\left( s \right) \rightleftharpoons \mathop {BaS{O_4}}\limits_S \left( {aq} \right)\xrightarrow{{}}\mathop {B{a^{ + 2}}}\limits_S \left( {aq} \right) + \mathop {SO_4^{ - 2}}\limits_S \left( {aq} \right)$

$\large {K_{sp}} = S \times S = {\left( {\frac{{2.33}}{{233}} \times {{10}^{ - 3}}} \right)^2} = {10^{ - 10}}$

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