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

`lamda_(m)^(@)(KCl)=lamda_(m)^(@)(K^(+))+lamda_(m)^(@)(Cl^(-))`
`lamda_(m)^(@)(K^(+))=lamda_(m)^(@)(KCl)-lamda_(m)^(@)(Cl^(-))`
`=(149.9-76.3)S" "cm^(2)mol^(-1)`
`=73.6"S "cm^(2)mol^(-1)`
`lamda_(m)^(@)(KNO_(3))=lamda_(m)^(@)(K^(+))+lamda_(m)^(@)(NO_(3)^(-))`
`lamda_(m)^(@)(NO_(3)^(-))=lamda_(m)^(@)(KNO_(3))-lamda_(m)^(@)(K^(+))`
`=(144.9-73.6)S" "cm^(2)mol^(-1)`
`=71.3S" "cm^(2)mol^(-1)`