Which pair will show the common ion effect?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The common ion effect is the suppression of the degree of dissociation of a weak electrolyte by the addition of a strong electrolyte containing a

Vedclass · Accepted Answer

$NH_4OH + NH_4Cl$

Vedclass · Answer

(C) The common ion effect is the suppression of the degree of dissociation of a weak electrolyte by the addition of a strong electrolyte containing a common ion.$NH_4OH$ is a weak base that dissociates as: $NH_4OH \rightleftharpoons NH_4^+ + OH^-$.$NH_4Cl$ is a strong electrolyte that dissociates completely as: $NH_4Cl \rightarrow NH_4^+ + Cl^-$.Due to the presence of the common ion $NH_4^+$,the equilibrium of $NH_4OH$ shifts to the left,suppressing its dissociation. Thus,the pair $NH_4OH + NH_4Cl$ shows the common ion effect.

Similar Questions

Explain the effect on the resulting solution when $0.05 \ M$ acetate ion is added to a $0.05 \ M$ acetic acid solution.

The following equilibrium exists in aqueous solution: $CH_3COOH \rightleftharpoons CH_3COO^{-} + H^{+}$. If dilute $HCl$ is added,without change in temperature,the:

On passing $H_2S$ gas through a highly acidic solution containing $Cd^{2+}$ ions,$CdS$ is not precipitated because

$HCl$ gas was passed through a solution containing $CaCl_{2}$,$MgCl_{2}$,and $NaCl$. Which of the following compound$(s)$ crystallise$(s)$?

Test tubes $A$ and $B$ contain solutions of $NH_4Cl$ and $NaCl$ respectively. What happens if $Mg(OH)_2$ solution is added to both test tubes?

Vedclass Test Series

Exam Paper Generator

Online Exam Module