Question

The molar ionic conductance at infinite dilution of K+ and So4-2 are 73.5 and 160 S cm^2 mol^-1 respectively. The molar conductance of solution of K2So4 at infinite dilution will be​

Answer 1

Answer:

see the attachment

Explanation:

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Answer 2

Given:

Molar ionic conductance at infinite dilution of K+ is 73.5 S cm²/mol and of $S{O_{4}}^{2-}$ is 160 S cm²/mol.

To find:

Molar conductance of solution of K2SO4 at infinite dilution.

Concept:

The molar conductance for any molecule can be calculated by individual addition of the ionic molar conductance of each ion multiplied by the number of specific ions present in the molecule.

Calculation:

$\sf{{\lambda_{M}}^{\infty}( K_{2}SO_{4}) = 2 \times \bigg \{{\lambda_{M}}^{\infty}( {K}^{ + 1} ) \bigg \} + {\lambda_{M}}^{\infty}{SO_{4}}^{ - 2} }$

$= > \sf{{\lambda_{M}}^{\infty}( K_{2}SO_{4}) = 2 \times \bigg \{73.5 \bigg \} + 160}$

$= > \sf{{\lambda_{M}}^{\infty}( K_{2}SO_{4}) = 147+ 160}$

$= > \sf{{\lambda_{M}}^{\infty}( K_{2}SO_{4}) = 307 \: \frac{S \: {cm}^{2} }{mol} }$

So final answer is :

Molar conductance at infinite dilution is 307 S cm²/mol.