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$5 .3 % (\frac{W}{V}) {Na}_{2} {CO}_{3}$ solution and $6 .3 % (\frac{W}{V}) H_{2} C_{2} O_{4} . 2 H_{2} O$ solution have same

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Important Questions on Solutions

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.1>Q 19

Which of the following conversion is/are correctly depicted? The symbols used are

m =

molality of the solution;

M =

molarity of the solution;

x_{1}

and

x_{2} =

mole fractions of solvent and solute respectively.

M_{1}

and

M_{2} =

molar masses of solvent and solute respectively,

d =

density of solution.

m_{1}

and

m_{2}

are amounts of the solvent and solute respectively.

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JEE Main

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 1

Components of a binary mixture of two liquids

A

and

B

, were being separated by distillation. After some time, the separation of the components stopped and the composition of the vapour phase became the same as that of the liquid phase. Both the components started appearing in the distillate. Explain why did this happen?

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JEE Main

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 2

Cyclohexane and ethanol at a particular temperature have vapour pressures of

280 mm

and

168 mm

, respectively. If these two solutions, having mole fraction value of cyclohexane equal to

0.32

, are mixed and the mixture has a total vapour pressure of

376 mm,

will the mixture be an ideal solution?

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 3

Benzene and toluene form two ideal solutions

A

and

B

313 K

. Solution

A

contains

4

moles of toluene and one mole of

C_{6} H_{6}

. Solution

B

contains equal masses of toluene and benzene. Calculate the total vapour pressure in each case. The vapour pressure of pure

C_{6} H_{6}

and pure toluene are

160 nm

and

60 mm

, respectively, at

313 K

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 4

The vapour pressure of pure ethylene bromide and propylene bromide are

170 mm

and

127 mm

Hg

at a temperature. Find out the vapour pressure of ethylene bromide in a

60 %

by mass solution of ethylene bromide and propylene bromide at the same temperature. Also, report the vapour pressure of propylene bromide as well as the total vapour pressure of the solution.

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 5

Considering the formation, breaking and strength of a hydrogen bond, predict why the mixture of methanol and acetone will show a positive deviation from Raoult's law and the mixture of chloroform and acetone will show negative deviation.

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 6

An ideal solution has two components

A

and

B

. If

A

is more volatile than

B

i.e

P_{A}^{o} > {P^{o}}_{B},

and also

P_{A}^{o} > P_{T},

then the correct relation between mole fraction of

A

in liquid

(X)

and vapour

(Y)

phase is

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 7

A solution has

1 : 4

mole ratio of pentane to hexane. The vapor pressure of pure hydrocarbons at

20 ° C

are

440 mm Hg

for pentane and

120 mm Hg

for hexane. The mole fraction of pentane in the vapor phase would be:

5.3% WVNa2CO3 solution and 6.3% WVH2C2O4.2H2O solution have same

Important Questions on Solutions

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$5 .3 % (\frac{W}{V}) {Na}_{2} {CO}_{3}$ solution and $6 .3 % (\frac{W}{V}) H_{2} C_{2} O_{4} . 2 H_{2} O$ solution have same