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wedge^(@).(m) for CaCl(2) and MgSO(4) fr...

`wedge^(@)._(m)` for `CaCl_(2)` and `MgSO_(4)` from the given data.
`lambda_(Ca^(2+))^(@)=119.0S cm^(2)mol^(-1)` ltbr. `lambda_(Cl^(c-))^(@)=76.3S cm^(2)mol^(-1)`
`lambda_(Mg^(2+))^(@)=106.0S cm^(2)mol^(-1)`
`lambda_(SO_(4)^(2-))^(@)=160.0 cm^(2)mol^(-1)`

Text Solution

Verified by Experts

`Lambda_(m(CaCl_(2)))^(@)=Lambda_(m(Ca^(2+)))^(@)+2Lambda_(m(Cl^(-)))^(@)`
`=119+(2xx76.3)="271.6 S cm"^(2)" mol"^(-1)`
`Lambda_(m(MgSO_(4)))^(@)=Lambda_(m(Mg^(2+)))^(@)+2Lambda_(m(SO_(4)^(2-)))^(@)`
`=106+160="266 S cm"^(2)" mol"^(-1)`
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