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Important Questions on Solutions

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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
The plot of total vapour pressure as a function of mole fraction of the components of an ideal solution formed by mixing liquids X and Y is
HARD
Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
Choose the correct statement with respect to the vapour pressure of a liquid among the following :
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
A pressure cooker reduces cooking time for food because
MEDIUM
Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
Consider the following liquid - vapour equilibrium.

Liquid⇌Vapour

Which of the following relations is correct?
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions

The vapour pressure vs. temperature curve for a solution solvent system is shown below.

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The boiling point of the solvent is _____°C.

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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
The vapour pressures of A and B at 25°C are 90 mmHg and 15 mm Hg respectively. If A and B are mixed such that the mole fraction of A in the mixture is 0.6, then the mole fraction of B in the vapour phase is x×10-1. The value of x is (Nearest integer)
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
Which of the following changes will cause increase in vapour pressure of 1 molal aqueous KI solution at same temperature?
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
Which one of the statements given below-concerning properties of solutions, describes a colligative effect?
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
Statement - 1: Only temperature can change the vapour pressure of a pure liquid.

Statement - 2: Equilibrium constant does not change unless temperature is changed.
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
The vapour pressure of a liquid in a closed container depends upon
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions

A liquid is kept in a closed vessel. If a glass plate of negligible mass with small hole is kept on top of the liquid surface, then vapour pressure of the liquid in the vessel is:

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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
A substance will be deliquescent if its vapour pressure :
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions

The pair of boiling point and compound are given as,

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Which will show lowest vapour pressure at room temperature?

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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
12 g of urea is dissolved in 1 litre of water and 68.4 g of sucrose is dissolved in 1 litre of water. The lowering of vapour pressure of the first process is 
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
Statement - 1: If a liquid solute which is more volatile than the solvent, is added to it then the vapour pressure may increase. Because
Statement - 2: In the presence of a more volatile liquid solute, only solute will form the vapours and solvent will not.
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
An aqueous solution of methanol in water has vapour pressure
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
Using the following information determine the boiling point of a mixture contains 1560 g benzene and 1125 g chlorobenzene, when the external pressure is 1000 torr. Assume the solution is ideal.
Given, Molar mass of benzene = 78

Molar mass of chlorobenzene = 112.5
 
Temperature
(0oC)		 Vapour pressure of benzene
(torr)		 Vapour pressure of chlorobenznee (torr)
      80              750               120
      90             1000               200
     100             1350               300
     110             1800               400
     120             2200               540
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
Which of the following statements is correct, if the intermolecular forces in liquids A, B and C are in the order A < B < C ?
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
A substance will be deliquescent if its vapour pressure :
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Chemistry>Physical Chemistry>Solutions>Vapour Pressure of Liquid Solutions
On a humid day in summer, the mole fraction of gaseous a H2O (water vapour) in the air at 25∘C  can be as high as 0.0287. Assuming a total pressure of 0.977 atm. What is the partial pressure of dry air?