First slide

Conductivity , Molar conductivity and Equivalent Conductivity

Question

The resistance of 0.1 N solution of formic acid is 200 ohm and cell constant is 2.0 cm^-1. The equivalent conductivity (in Scm²eq^-1) of 0.1 N formic acid is:

Moderate

A

100
B

10
C

1
D

none of these

Solution

$\begin{array}{l} κ = G . G^{*} \Rightarrow \frac{1}{200} 2 \Rightarrow 0 .01 \\ Λ_{eq} = \frac{κ}{N} \times 1000 \\ \Rightarrow \frac{0 .01}{0 .1} \times 1000 \Rightarrow 100 \end{array}$

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