At `18^(@)C` the mobilities of `NH_(4)^(+)` and `CIO_(4)^(-)` ions are `6.6 xx 10^(-4)` and `5.7 xx 10^(-4)cm^(2)"volt"^(-1)sec^(-1)` at infinite dilution. Calculate equivalent conductance of ammonium chlorate solution.

Answer

`118.67 mho cm^(2) eq^(-1)`

Explanation

From Kohlrausch's law, we have,
`Delta_(NH_(4)ClO_(4))^(@)=lamda_(NH_(4)^(+))^(@)+lamda_(ClO_(4)^(-))^(@)=Fu_(NH_(4)^(+))^(@) +Fu_(ClO_(4)^(-))^(@)`
`=F(u_(NH_(4)^(+))^(@)+u_(ClO_(4)^(-))^(@)=96500(6.6 xx 10^(-4)+5.7 xx 10^(-4)))`
`=118.67 "mho cm"^(2)`.