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The values of ^^(m)^(oo) for KCl and KNO...

The values of `^^_(m)^(oo)` for `KCl` and `KNO_(3)` are `149.86` and `154.96Omega^(-1)cm^(2)"mol"^(-1)`. Also `lambda_(Cl)^(oo)` is 71.44 `ohm^(-1)cm^(2) "mol"^(-1)` . The value of `lambda_(NO_(3)^(-))^(oo)` is

A

`76.54 ohm^(-1) cm^(2)"mol"^(-1)`

B

`133.08 ohm^(-1)cm^(2)"mol"^(-1)`

C

`37.7 ohm^(-1)cm^(2)"mol"^(-1)`

D

unpredictable.

Text Solution

Verified by Experts

The correct Answer is:
A
`^^_(m)^(oo)(NO_(3)^(-))=^^_(m)^(oo)(KNO_(3))-^^_(m)^(oo)+^^_(KCl)+^^_(m)^(oo)(Cl^(-))`
` =(154-96-149.86+71.44)Omega^(-1)cm^(2)"mol"^(-1)`
`(226.40-149.86)Omega^(-2)cm^(2)"mol"^(-1)`
`=76.54Omega^(2)cm^(2)"mol"^(-1)`
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