Q11 / 155 · WBJEE 2021 · Chemistry

Which one of the following solutions will have highest conductivity?

A
$0.1 \mathrm{M} \quad \mathrm{CH}_{3} \mathrm{COOH}$
B
$0.1 \mathrm{M} \quad \mathrm{NaCl}$
C
$0.1 \mathrm{M} \quad \mathrm{KNO}_{3}$
Correct answer
D
$0.1 \mathrm{M} \quad \mathrm{HCl}$

Solution

$\mathrm{HCl}$ and $\mathrm{KNO}_{3}$ both are strong electrolyte but $\mathrm{HCl}$ have aqueous component $\mathrm{H}^{+}$, which has highest conductivity. $\therefore \mathrm{HCl}$ will have highest conductivity.

Hence, the correct answer is option: 'D'.

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