ElectrochemistryHard

Question

Equal volumes of 0.015 M – CH3COOH and 0.015 M – NaOH solutions are mixed together. What would be the molar conductivity of mixture if conductivity of CH3COONa is 6.3 × 10−4 S cm−1?

Options

A.0.84 S cm2 mol−1
B.8.4 S cm2 mol−1
C.84 S cm2 mol−1
D.42 S cm2 mol−1

Solution

$n_{m} = \frac{k}{C} = \frac{6.3 \times 10^{- 4}}{\frac{0.015}{2} \times 10^{- 3}} = 84\text{ S c}\text{m}^{2}\text{ mo}\text{l}^{- 1}$

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