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Given the following molar conductives at...

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

283.5

B

307

C

433.5

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
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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