1.

If alpha is the degree of ionization, C the concenr=tration of a weak electrolyte and K_(a) the acid ionization constant, then the correct relationship between alpha, C and K_(a) is

Answer»

`alpha^(2) = SQRT((K_(a))/(C))`
`alpha^(2) = sqrt((C)/(K_(a))`
`alpha = sqrt((K_(a))/(C))`
`alpha = sqrt((C)/(K_(a))`

Solution :According to the Ostwald's DILUTION FORMULA `alpha^(2) = (K(1- alpha))/(C)`. But for WEAK electrolytes `alpha` is very small. So that `(1- alpha)` can be neglected. So that `alpha = sqrt((K_(a))/(C))`.


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