1.

Specific conductance of 1 M KNO_(3) solution is observed to be 5.55 times 10^(-3)mho cm^(-1). What is the equivalent conductance of KNO_(3) when one litre of the solution is used?

Answer»

Solution :Specific conductance `kappa=4.23xx10^(-4)"mho.CM"^(-1)`
`lambda_(C )=(kappa1000)/(C )=(4.23xx10^(-4)xx1000)/(0.04)`
`=10.575"mho.cm"^(2).eq^(-1)`.
`alpha=0.0612=(lambda_(C ))/(lambda_(oo))=(10.575)/(lambda_(oo))`
`THEREFORE lambda_(oo)="172.79 mho. cm"^(2)."GM. equiv."^(-1)`.


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