The molar conductivity of $A g N O_{3}, N a C N, a n d N a N O_{3}$ at infinite dilution are 116.5, 110.3, and 105.2 mho $c m^{2} m o l^{- 1}$ respectively. In the same unit, the molar conductivity of $A g C N$ is

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130.6

111.4

121.6

150.2

answer is A.

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Detailed Solution

Given that,
The molar conductivity of solutions at infinite dilution

$\begin{array}{l} \land_{A g N O_{3}}^{\infty} = 116.5 m h o c m^{2} m o l^{- 1} \\ \land_{N a C N}^{\infty} = 110.3 m h o c m^{2} m o l^{- 1} \\ \land_{N a N O_{3}}^{\infty} = 105.2 m h o c m^{2} m o l^{- 1} \\ \land_{A g C N}^{\infty} = \land_{A g N O_{3}}^{\infty} + \land_{N a C N}^{\infty} - \land_{N a N O_{3}}^{\infty} \\ = 116.5 + 110.3 - 105.2 \\ = 121.6 m h o c m^{2} m o l^{- 1} \end{array}$