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

At `25^(@)`C, the molar conductance at infinite dilution for the strong electrolytes `NaOH, NaCl and BaCl_(2)` are `248 xx 10^(-4) , 126 xx 10^(-4) and 280 xx 10^(-4) S m2 mol^(-1)` respectively. The value of `wedge_(m)^(infty) Ba(OH)_(2)` in S `m^(2) mol^(-1)` will be:

A

`118.88xx10^(-4)`

B

`154.66xx10^(-4)`

C

`273.54xx10^(-4)`

D

`1 96.21xx10^(-4)`

Text Solution

Verified by Experts

The correct Answer is:
C
`^^_(m)^(@)(CaCl_(2))=lambda_(m)^(@)(Ca^(2+))+2lambda_(m)^(@)(Cl^(-))`
`=118.88xx10^(-4)+2(77+33xx10^(-4))`
`=273.54xx10^(-4)m^(2)"mol"^(-1)`
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