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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

From Kohlrausch law `:`
`wedge^(@)._(m(CaCl_(2)))=lambda_(Ca^(2+))^(@)+2lambda_(Cl^(c-))^(@)=119.0xx(76.3)`
`=271.6S cm^(2)mol^(-1)`
`wedge_(m(MgSO_(4)))^(@)=lambda_(Mg^(@+))^(@)+lambda_(SO_(4)^(2-))^(@)=106.0+160.0`
`266S cm^(2) mol^(-1)`
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