The resistance of a conductivity cell with cell constan... | (Chemistry) | DivineJEE

Exam

Chemistry

The resistance of a conductivity cell with cell constant 1.14 cm^{$-$ 1}, containing 0.001 M KCl at 298 K is 1500

\Omega

. The molar conductivity of 0.001 M KCl solution at 298 K in S cm² mol^{$-$ 1} is ____________. (Integer answer)

$K = {1 \over R} \times {l \over A} = \left( {\left( {{1 \over {1500}}} \right) \times 1.14} \right)$ S cm^{$-$ 1}

$\\ \Rightarrow { \wedge _m} = 1000 \times {{\left( {{{1.14} \over {1500}}} \right)} \over {0.001}}$ S cm² mol^{$-$ 1}

= 760 S cm² mol^{$-$ 1}

$\Rightarrow$ 760

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