Q24.Why osmotic pressure is a better criteria for measuring the molecular mass of macromolecules as compared to elevation of boiling point or depression of freezing point?
Answers
Answer:
See the explanation u will understand it......
Explanation:
As compared to the colligative properties like elevation in boiling pint and depression in freezing point, osmotic pressure is a good criterion for finding the molecular mass of macromolecules. This is because of the fact that, osmotic pressure is the only colligative property which can be measured at room temperature. Other colligative properties require a temperature change. At higher temperature, these macromolecules may get denatured.
Moreover, the colligative properties except osmotic pressure gives only very low value. This may affect the accuracy of the measurement. Even a small error in the measurement can cause a big difference.
Hence, osmotic pressure is a better criterion for measuring the molecular mass of macromolecules as compared to elevation of boiling point or depression of freezing point.