First slide

Electrolytic cells

Question

The conductivity of 0.01 M solution of sodium hydroxide is 2.48 × 10^-3 S cm^-1. The molar conductivity of sodium hydroxide at 0.01 M concentration is

Moderate

A

0.248 S cm² mol^-1
B

4.03 $Ω^{- 1}$ cm^-2 mol^-1
C

4.03 × 10^-3 S^-1 cm² mol^-1
D

248.0 S cm² mol^-1

Solution

$Λ_{m} = κ / c = 2 .48 \times 10^{- 3} Ω^{- 1} {cm}^{- 1} / 0 .01 \times 10^{- 3} mol {cm}^{3} = 248 S {cm}^{2} {mol}^{- 1}$

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