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Raoult's Law

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Question

State True or False.
An ideal solution follows Raoult's law over all ranges of concentrations and pressure.

A

True

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B

False

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Solution

The correct option is A True
An ideal solution follows Raoult's law over all ranges of concentrations and pressure. In such solutions, the solute - solute and solute - solvent interactions are almost similar to solute - solvent interactions.

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Q. What are the conditions for an ideal solution which obeys Raoult's law over the entire range of concentration?

State two true or false:

In an experiment on Osmosis if external pressure is applied on a dilute solution less water will pass into the concentrated solution.

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. CASE 1: 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.

Correct statement(s) about azeotropes is/are:
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'For an ideal gas, the product of pressure and volume is always constant irrespective of the temperature.' State true or false.

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