1.

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

Answer»

Solution :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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