The degree of dissociation ($\alpha$ ) of a weak electrolyte, AxBy is related to van’t Hoff factor (i) by the expression :

Question

The degree of dissociation ($\alpha$ ) of a weak electrolyte, A_xB_y is related to van’t Hoff factor (i) by the expression :

$\alpha = {{i - 1} \over {x + y + 1}}$

$\alpha = {{x + y - 1} \over {i - 1}}$

$\alpha = {{x + y + 1} \over {i - 1}}$

$\alpha = {{i - 1} \over {(x + y - 1)}}$

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