First slide

Solubility product(KSP)

Question

At a certain temperature, the solubility of the salt M_m A_n in water is 's' moles per litre. The solubility product of the salt is

Easy

A

M^m Aⁿ
B

(m+n)s^m+n
C

m^mnⁿs^m+n
D

M^mAⁿs.

Solution

$\large {M_m}{A_n}\left( s \right) \rightleftharpoons \mathop {{M_m}{A_n}}\limits_S \left( {aq} \right)\xrightarrow{{}}\mathop {m{M^{ + x}}}\limits_{ms} \left( {aq} \right) + \mathop {n{A^{ - y}}}\limits_{ns} \left( {aq} \right)$
AlSo, m $\large \times$ x = n X y; charge conservation
$\large {K_{sp}} = {\left( {ms} \right)^m} \times {\left( {ns} \right)^n}$
K_sp = m^m nⁿ S^m+n

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