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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

By Kohlrausch law, `wedge_(m)^(@)(CaCl_(2))=lamda_(Ca^(2+))^(@)+2lamda_(Cl^(-))^(@)=119.0" S "cm^(2)mol^(-1)+2xx76.3" S "cm^(2)mol^(-1)`
`=(119.0+152.6)" S "cm^(2)mol^(-1)=271.6" S "cm^(2)mol^(-1)`
`wedge_(m)^(@)(MgSO_(4))=lamda_(Mg^(2+))^(@)+lamda_(SO_(4)^(2-))^(@)=106.0" S "cm^(2)mol^(-1)+160.0" S "cm^(2)mol^(-1)=266" S "cm^(2)mol^(-1)`.
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