The degree of dissociation (?) of a weak electrolyte,

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Question:

The degree of dissociation (1) of a weak electrolyte, $A_{x} B_{y}$ is related to van't Hoff factor (i) by the expression :-

 

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

  2. $\alpha=\frac{x+y+1}{i-1}$

  3. $\alpha=\frac{i-1}{(x+y-1)}$

  4. $\alpha=\frac{i-1}{x+y+1}$

Correct Option: , 3

Solution:

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