Which colligative property is preferred for the molar mass determination of macro molecules ? Why ?

Which colligative property is preferred for the molar mass determination of macro molecules ? Why ?
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1 Answer

Answer :

Ans. Osmotic pressure is preferred over all other colligative properties because : 

(a) even in dil. soln the o. p.values are appreciably high and can be measured accurately. 

(b) o. p.can be measured at room temp. on the other hand elevation in B. P. is measured at high temp. where the solute may decompose. The depression in freezing point is measured at low temp.
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