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Molar conductivities at infinite dilution of `Mg^(2+)` and `Br^(-)` are 105.8 `Omega^(-1) cm^(-2) mol^(-1) ` and `78.2 Omega^(-1) cm^(-2) mol^(-1) ` respectively . Calculate molar conductivity at zero concentration of `MgBr_(2)` |
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Answer» Correct Answer - Molar conductivity of `MgBr_(2)` at zero concentration `= A_(0(MgBr"_(2))) = 262.2 Omeg^(-1) cm^(2) mol^(-1)` `gamma_(Mg^(2+))^(o) = 105.8 Omega^(-1) cm^(2) mol^(-1)` `gamma_(Br^(-))^(0) = 78.2 Omega^(-1) cm^(2) mol^(-1)` `A_(o(MgBr_(2))) = gamma_(Mg^(2+))^(0) = 2gamma_(Br^(-))^(0)` `=105.8 + 2 xx 78 .2 = 105.8 + 156 .4` ` =262 .2 Omega^(-1) cm^(-2) mol^(-1)` |
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