Question

Statement Ebullioscopy or cryscopy can not be used for the determination of mol. wt. of polymers.
Explanation High molecular weight solute leads to very low value of `Delta T_(b)` or `Delta T_(f)`
A. `S` is correct but `E` is wrong.
B. `S` is wrong but `E` is correct.
C. Both `S` and `E` are correct and `E` is correct explanation of `S`.
D. Both `S` and `E` are correct but `E` is not correct explanation of `S`.

Answer 1

Correct Answer - C
If mol. Wt. is low, `Delta T_(b)` or `Delta T_(f)` being low can be not be read out accurately. A little error in measurement of `Delta T_(b)` will cause abnormal values of mol.wt.