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According of Kohlrausch law, the limitin...

According of Kohlrausch law, the limiting value of molar conductivity of an electrolyte `A_(2)B` is
(a)`lambda^(oo) ._(A^(+)) + lambda^(oo) ._((B^(-))`
(b)`lambda^(oo) ._(A^(+)) - lambda^(oo) ._(B^(-))`
(c)`2lambda^(oo) ._(A^(+)) +(1)/(2)lambda^(oo) ._((B^(-))`
(d)`2lambda^(oo) ._(A^(+)) + lambda^(oo) ._(B^(-))`

A

`lambda_((A^(+)))^(@)+lambda_((B^(-)))^(@)`

B

`lambda_((A^(+)))^(@)-lambda_((B^(-)))^(@)`

C

`2lambda_((A^(+)))^(@)+(1)/(2)lambda_((B^(-)))^(@)`

D

`2lambda_((A^(+)))^(@)+lambda_((B^(2-)))^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
the electrolyte `A_(2) B` ionises as
`A_(2)Brarr2A^(+)+B^(-)`
`therefore ^^_(m)^(oo)=2lambda_((A^(+)))^(oo)_+2lambda_((B^(-)))&_(oo)`
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