1.

Given the following molar conductives at infinite dilution and `25^(@)C "HCl"=426, KCl=150 , CaCl_(2) =272 NaCl=126.5 and Na_(2)SO_(4) = 260 S CN^(3) mol^(-1) .` Calculate `overset(oo)Lambda_(m)` of `K_(2)SO_(4)` :-A. 283.5B. 307C. 433.5D. None of these

Answer» Correct Answer - B
`(overset(oo)Lambda_(m))_(K_(2)SO_(4))=2xx (overset(oo)Lambda_(m))_(K^(+))+ (overset(oo)Lambda_(m))_(SO_(4)^(-2))`
`=2xx(overset(oo)Lambda_(m))_(KCl) + (overset(oo)Lambda_(m))_(Na_(2)SO_(4)) - 2xx(overset(oo)Lambda_(m))_(NaCl)`
`2xx(150)+260-2xx(126.5)=307`


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