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Assertion: Ebullioscopy or cryoscopy can...

Assertion: Ebullioscopy or cryoscopy cannot be used for the determination of molar mass of polymers.
Reason:High molar mass solute leads to very low value of `DeltaT_(b)orDeltaT_(f)`

A

If both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both the assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true but reason is false

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
If molar mass is low,`DeltaT_(b)orDeltAT_(f)`being low cannot be read out accurately .A little error in measurement of `DeltaT_(b)` will cause abnormal values of mol.wt.
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