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A dilute solution contains 'x' moles of ...

A dilute solution contains 'x' moles of solute A in 1 kg of solvent with molal elevation constant `K_(b)`. The solute dimerises in the solution according to the following equation. The degree of association is (a) :
`2A hArrA_(2)`
The degree of assoicition is equal to :

A

`a = ((K_(b)x - /_\T_(b)))/(/_\T_(b)2)`

B

`a = (2(K_(b)x - /_\T_(b)))/(K_(b)x)`

C

`a =2 + (2/_\T_(b))/(K_(b)x)`

D

`a = (/_\T_(b))/(2K_(b)x)`

Text Solution

Verified by Experts

The correct Answer is:
b
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