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The value A^(oo) for HCI, NaCI and CH(3)...

The value `A^(oo)` for HCI, NaCI and `CH_(3)COONa` are 426.5 and 91.0 `ohm^(-1)cm^(-1)mol^(-1)` respectively. Calculate the value of `A^(oo)` for acetic acid.

Text Solution

Verified by Experts

The correct Answer is:
`390.6 ohm^(-1) cm^(2)mol^(-1)`
`Lambda_(m(CH_(3)COOH))^(oo)=Lambda_(m(CH_(3)COONa))^(oo)+Lambda_(m(HCl))^(oo)-Lambda_(m(NaCl))^(oo)`
`=(91.0+426.0-126.0)" ohm"^(-1)cm^(2)mol^(-1)=390.6" ohm"^(-1)cm^(2)mol^(-1)`.
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