Question

The conductivity and molar conductivity of an electrolytic solution ___________ and ____________ respectively upon dilution.

• A. Decreases, increases
• B. Decreases, decreases
• C. Increases, decreases
• D. Increases, increases

Answer 1

The correct option is A Decreases, increases

Upon dilution, number of ions per $\text{ml}$ decreases, so $K$ decreases.
$\lambda m=\frac{K}{C}$ (SI units)
Molar conductance increases upon dilution as there is more volume available for the same moles which leads to a less hindred movement of ions.