Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 54

MEDIUM

NEET

IMPORTANT

Earn 100

At $323 K$ , the vapour pressure in millimeters of mercury of a methanol-ethanol solution is represented by the equation, $p = 120 X_{A} + 140$ , where $X_{A}$ is the mole fraction of methanol. Then the value of $\lim_{x_{A} \to 1} (\frac{p}{X_{A}})$ is:

50% studentsanswered this correctly

Important Questions on Solutions

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 55

1 mole

of heptane (

V . P . = 92 mm

of

Hg

) was mixed with

4 moles

of octane (

V . P . = 31 mm

of

Hg

). The vapour pressure of resulting ideal solution is:

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 56

The vapour pressure of a pure liquid

A

is

70 torr

at

27^{0} C

. It forms an ideal solution with another liquid

B

. The mole fraction of

B

is

0.2

and the total vapour pressure of the solution is

84 torr

at

27^{0} C

. The vapour pressure of pure liquid

B

at

27^{0} C

is ______.

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 57

The vapour pressure of two liquids

P

and

Q

are

80

and

60 torr

, respectively. The total vapour pressure of solution obtained by mixing

3 mol

of

P

and

2 mol

of

Q

would be

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 58

Which statement about the composition of vapour over an ideal

1 : 1

molar mixture of benzene and toluene is correct? Assume the temperature is constant at

25 ° C

. Vapour pressure at

25 ° C

:
Benzene

75 mmHg

Toluene

22 mmHg

HARD

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 59

The vapour pressure of pure liquid

' A'

at

310 ° C

is

120

torr. The vapour pressure of this liquid in solution with liquid $B$ is

72

torr. Calculate the mole fraction of

' A'

in solution if the mixture obeys Raoult's law.

HARD

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 60

The vapour pressure of pure benzene and toluene are

160

and

60

torr respectively. The mole fraction of toluene in vapour phase in cotanct with equimolar solution of benzene and toluene is

HARD

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 62

Which one of the following is the incorrect form of Raoult's law?

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 63

The vapour pressure of a dilute aqueous solution of Glucose is

750 mm

of mercury at

373 K .

The mole fraction of solute is -