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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

greater then molecular weight

B

lower than actual molecular weight

C

equal to the actual molecular weight

D

cannot be predicted by the given data

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The correct Answer is:
A
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