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At 25^(@)C the molar conductances at inf...

At `25^(@)C` the molar conductances at infinite dillution for the strong electrolytes NaOh, NaCl and `BaCl_(2)` are `248xx10^(-4),126xx10^(-4)` and `280xx10^(-4)Sm^(2)mol^(-1)` respectively `lamda^(@)` of `Ba(OH)_(2)` is `Sm^(2) mol^(-1)` is

A

`52.4 xx10^(-4)`

B

`524 xx10^(-4)`

C

`402 xx10^(-4)`

D

`262 xx10^(-4)`

Text Solution

Verified by Experts

The correct Answer is:
A
`wedge_(m)^(@)Ba(OH)_(2)=wedge_(m)^(@)BACI_(2)-2wedge_(m)^(@)NaCI`
`=280 xx10^(-4) +2xx248 xx10^(-4) -2xx126 xx10^(-4) =524 xx10^(-4) s m^(2) mol^(-1)`
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