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Osmotic Pressure

What is osmot...

Question

What is osmotic pressure? Draw a labelled diagram of Barkeley - Hartley method of determination of osmotic pressure?

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Solution

Osmotic pressure : The excess pressure which must be applied to the solution to prevent the entry of solvent through a semipermeable membrane.It is also defined as the measure of the tendency of a solution to take in pure solvent (which belongs to the solution under discussion) by osmosis.

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Q. Berkeley-Hartley method cannot be used to determine osmotic pressure of non-aqueous solutions.

Q. The best and accurate method for determining osmotic pressure is:

Q. Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A) : Osmotic pressure method is used to determine the molar masses of proteins, polymers etc.
Reason (R) : The magnitude of osmotic pressure is large even for very dilute solutions.
[0.77 Mark]

Q. Osmotic pressure method is the most useful method for determining the molecular weight of macromolecules. The hydrostatic pressure develop as a result osmosis is a measure of osmotic pressure. Osmotic pressure of a 0.02 M cane sugar solution at 300 k is: ( R = 0.0821 L atm degree

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Q. The molecular weight of

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