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At 18^(@)C the mobilities of NH(4)^(+) a...

At `18^(@)C` the mobilities of `NH_(4)^(+)` and `CIO_(4)^(-)` ions are `6.6 xx 10^(-4)` and `5.7 xx 10^(-4)cm^(2)"volt"^(-1)sec^(-1)` at infinite dilution. Calculate equivalent conductance of ammonium chlorate solution.

Text Solution

Verified by Experts

From Kohlrausch.s law, we have,
`Lambda_(NH_(4)ClO_(4))^(@) = lambda_(NH_(4))^(@) + lambda_(ClO_(4)^(-))^(@)`
`= F U_(NH_(4))^(+) + FU_(ClO_(4)^(-))^(@)`
`= F = (U_(NH_(4))^(@) + F U_(ClO_(4)^(-))^(@))`
`=96500 (6.6 xx 10^(-4) + 5.7 xx 10^(-4))`
`= 118.67 "mho cm"^(2)`.
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