Question

A $0.1M$ solution of a monobasic acid has a specific resistance of ‘r’ Ωcm, its molar conductivity is:

• A. 10/r
• B. 10 r
• C. ${10}^4/r$
• D. ${10}^4$ r

Answer 1

The correct option is C ${10}^4/r$

${\lambda }_m=\frac{1000\times \kappa }{Molarity}$
where $\kappa$ is the conductivity
$\kappa =\frac{1}{r}$
${\lambda }_m=\frac{1000}{0.1\times r}={10}^4/r$