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A dilute solutions "x" moles of A in 1kg...

A dilute solutions "x" moles of A in 1kg of solvent with molal elevation constant `K_(b)` . The solution dimerises in the solution . `2AhArr A_(2) (alpha` be degree of association)
The molecular weight observed will be :

A

`alpha=((K_(b)xDeltaT_(b))/(DeltaT_(b).2))`

B

`alpha=(2(K_(b)x-Delta-DeltaT_(b))/(K_(b)x.))`

C

`alpha=((2+2DeltaT_(b))/(K_(b)x))`

D

`alpha=(DeltaT_(b))/(2K_(b)x)`

Text Solution

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The correct Answer is:
B
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