Among the following,the correct statement is

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

Question

(A) . $A$ dilute aqueous solution of $NH_3$ exists as $NH_4OH$,which dissociates as: $NH_4OH \rightleftharpoons NH_4^+ + OH^-$. On adding solid ammoni

Vedclass · Accepted Answer

$pH$ decreases when solid ammonium chloride is added to a dilute aqueous solution of $NH_3$

Vedclass · Answer

(A) . $A$ dilute aqueous solution of $NH_3$ exists as $NH_4OH$,which dissociates as: $NH_4OH \rightleftharpoons NH_4^+ + OH^-$. On adding solid ammonium chloride $(NH_4Cl)$,it dissociates completely: $NH_4Cl \rightarrow NH_4^+ + Cl^-$. Due to the common ion effect of $NH_4^+$,the equilibrium shifts to the left,decreasing the concentration of $OH^-$. Since $pOH = -\log[OH^-]$,a decrease in $[OH^-]$ increases $pOH$,which in turn decreases the $pH$ $(pH = 14 - pOH)$.

Similar Questions

Addition of which chemical will decrease the hydrogen ion concentration of an acetic acid solution?

Calculate the solubility of $AgCl$ in a $0.1 \ M \ NaCl$ solution. (Given: $K_{sp}$ of $AgCl = 1.6 \times 10^{-10}$)

The commercial salt is purified by passing

When $H_2S$ gas is passed into a certain solution,it reacts to form a white precipitate. The solution referred to contains ions of

In the analysis of $III$ group basic radicals of salts,the purpose of adding $NH_4Cl_{(s)}$ to $NH_4OH$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module