The conductivity of 0.001M Na2SO4 soluti...

The conductivity of 0.001M `Na_2SO_4` solution is `2.6xx10^(-4)Scm^(-1)` and increases to `7.0xx10^(-4)Scm^(-1)`, When the solution is saturated with `CaSO_4`. The molar conductivities of `Na^+` and `Ca^(2+)` are 50 and 120`Scm^2mol^(-1)`, respectively. Neglect conductivity of used water. What is the solubility product fo `CaSO_4`?

A

`4xx10^-6`

B

`1.57 xx 10^-3`

C

`4xx 10^-4`

D

`2.46 xx 10^-6`

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