Question

Camphor is often used in molecular mass determination because
(a) it is readily available
(b) it has a very high cryoscopic constant
(c) it is volatile
(d) it is solvent for organic substances

Answer 1

Answer:

Camphor is used in molecular mass determination because ( b) it has a very high cryoscopic constant.

Explanation:

The cryoscopic constant is the ratio of freezing point depression( a colligative property) to molality.

It is a constant factor that means 'a freezing measurement) and can be used to find the molecular weight of an unknown compound with high precision.

Answer 2

Answer:It has a very high cryoscopic constant.

Explanation:

FROM ROULTS LAW,

∆T = Molality× Kf( cryoscopic constant) The main advantage of having high cryoscopic constant is that for the same molality of solution, the depression in freezing point would be more. Hence the accuracy of measurement of molecular mass will be more.