First slide

Common ion effect

Question

Consider the following mixtures. The mixture in which Common ion effect is not observed is

Easy

A

$NaCl + NaOH$
B

${NH}_{4} OH + KOH$
C

$HCN + HCl$
D

${CH}_{3} COOH + {CH}_{3} COONa$

Solution

Suppression in the ionization of weak electrolyte(WA or WB) in presence of strong electrolyte(SA or SB or Salt) containing common ion is called common ion effect.
Both NaCl and NaOH are strong electrolytes. Common ion effect is not observed.

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