Question

Specific conductance of $0.1\, M \, HNO _{3}$ is $6.3 \times 10^{-2} \, ohm ^{-1} \, cm ^{-1}$. The molar conductance of the solution is

• A. $6.300 \, ohm ^{-1} \, cm ^{2} \, mol ^{-1}$
• B. $63.0\, ohm ^{-1}\, cm ^{2} \, mol ^{-1}$
• C. $630 \, ohm ^{-1} \, cm ^{2} \, mol ^{-1}$
• D. $315 \, ohm ^{-1} \, cm ^{2}\, mol ^{-1}$

Answer 1

Answer: (C)

$\lambda_{ m }=\frac{1000 \,k }{ C }=\frac{1000 \times 6.3 \times 10^{-2}}{0.1}$
$=630 \,ohm ^{-1}\, cm ^{2} \,mol ^{-1}$