HARD

JEE Main

IMPORTANT

Earn 100

Benzene and toluene form two ideal solutions $A$ and $B$ at $313 K$ . 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 $313 K$ .

Important Questions on Solutions

HARD

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.

MEDIUM

JEE Main

IMPORTANT

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.

MEDIUM

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

MEDIUM

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:

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 8

The vapor pressure of two liquids

P

and

Q

are

80

torr and

60

torr respectively. The total vapor pressure obtained by mixing

3

mole of

P

and

2

mole of

Q

would be

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 9

A maxima or minima obtained in the temperature, composition curve of a mixture of two liquids indicates

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 10

The lubricating action of an oil is more if it possesses

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 2 - Solutions>DPP 2.2>Q 11

The boiling point of

C_{6} H_{6}, {CH}_{3} OH, C_{6} H_{5} {NH}_{2}

and

C_{6} H_{5} {NO}_{2}

are

80 ° C, 65 ° C, 184 ° C

and

212 ° C

, respectively. Which one will show the highest vapour pressure at room temperature?

Important Questions on Solutions

Learn and Prepare for any exam you want !