The `lamda^(@)` values of KCl and `KNO_(3)` are 149.9 and 144.9 S `cm^(2)mol^(-1)` respectively. Also `lamda^(@)` for `Cl^(-)` is 71.44 S `cm^(2)mol^(-1)`.The `lamda^(@)` value of `NO_(3)^(-)` ion.

Explanation

`KCl rarr K^(+) + Cl^(-), lamda^(0) = 149.9 S cm^(2) mol^(-1)` …(1)
`KNO_(3) rarr K^(+) + NO_(3)^(-), lamda^()= 144.9 S cm^(2) mol^(-1)` …(2)
`Cl^(-) " "lamda^(0) = 76.3 S cm^(3) mol^(-1)` …(3)
To calculate `lamda^(0)` for `Cl^(-)`
`(2)- (1) + (3)= 144.9 - 149.9+ 76.3`
`=71.3 S cm^(2) mol^(-1)`