Question
Chemistry Question on Colligative Properties
Which of the following colligative properties can provide molar mass of proteins (or polymers or colloids) with greatest precision?
A
Depression in freezing point
B
Osmotic pressure
C
Relative lowering of vapour pressure
D
Elevation of boiling point
Answer
Osmotic pressure
Explanation
Solution
The technique of osmotic pressure for determination of molar mass of solute is particular useful for proteins as they are not stable at high temperature and polymers have poor solubility.