1.

A dilute solution of KCl was placed between two platinum electrodes, 12 cm apart, across which a potential of 1.93 volts was applied. How far (in m) would the K + ion move in 20 h at 25^(@)C ? Ionic conductance of K + ion at infinite dilution at 25^(@)C is 7.5 xx 10^(-3) moh m^(2) mol^(-1) .

Answer»


SOLUTION :IONIC mobility , `mu = (lambda_(m)^(0))/F = ("Speed of ion")/("Potential g r a d ient")`
or, `(7.5 xx 10^(-3))/(96500) = ("distance"//20 xx 3600)/(1.93//0.12)`
`IMPLIES "distance" = 0.09 m`.


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