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Molecular Weight of Polymers

i Write the c...

Question

(i) Write the colligative property which is used to find the molecular mass of macromolecules.
(ii) In non-ideal solution, what type of deviation shows the formation of minimum boiling azeotropes?

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Solution

(i) Osmotic pressure is used to find the molecular mass of macromolecules.
(ii) In non-ideal solution, positive deviation shows the formation of minimum boiling azeotropes.

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Q. Answer the following question :
In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?

Q. (i) Gas (A) is more soluble in water than gas (B) at the same temperature. Which one of the two gases will have the higher value of

K_{H}

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(ii) In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?

Q. Which colligative property is preferred for the molar mass determination of macromolecules?

Q. CASE1: Read the passage given below and answer the following question.

The solution which obeys Raoult’s law over the entire range of concentration are known as ideal solutions. The solution which does not obey Raoults law over the entire range of concentration, then it is called non-ideal solution. The vapour pressure of such as a solution is either higher or lower than that predicted by Raoult’s law. If it is higher, the solution exhibits positive deviation and if it is lower, it exhibits negative deviation from Raoult’s law.
Some liquids on mixing, form azeotropes which are binary mixture having the same composition in liquid and vapour phase. There are two types of azeotropes. Minimum boiling azeotropes and maximum boiling azeotropes.

Which of the following solutions show negative deviation from Raoult’s law?
[0.77 Mark]

Q. Which of the following colligative property is useful to determine molecular masses of polymer compounds from their solutions?

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