Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 64

MEDIUM

NEET

IMPORTANT

Earn 100

The vapour pressure of water at room temperature is $23.8 mm$ of $Hg .$ The vapour pressure of an aqueous solution of sucrose with mole fraction $0.1$ is equal to:

50% studentsanswered this correctly

Important Questions on Solutions

HARD

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 65

Relative lowering in vapour pressure of a solution containing

1

mole

K_{2} {SO}_{4}

in

54 g H_{2} O

is:

(K_{2} {SO}_{4}

is

100 %

ionised)

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 66

What weight of solute (molecular weight

= 60

) is required to dissolve in

180 g

of water to reduce the vapour pressure

\frac{4}{5} th

of pure water?

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 67

18 glucose

(C_{6} H_{12} O_{6})

is added to 178.2 g water. The vapour pressure of water (in torr) for this aqueous solution at 273 K is

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 68

The mass of glucose that should be dissolved in

100 g

of water in order to produce same lowering of vapour pressure as is produced by dissolving

1 g

of urea (molecular mass

= 60

) in

50 g

of water is:

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 69

Relative decrease in vapour pressure of an aqueous

NaCl

is

0.167

. Number of moles of

NaCl

present in

180 g

of

H_{2} O

is

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 70

An aqueous solution is

1.00

molal in

KI

. Which change will cause the vapour pressure of the solution to increase?

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 71

The vapour pressure of pure benzene

C_{6} H_{6}

at

50 ° C

is

268 torr .

How many moles of non-volatile solute per mole of benzene is required to prepare a solution of benzene having a vapour pressure of

167 torr

at

50 ° C

?

HARD

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 72

The vapour pressure of pure liquid

A

is

10 torr

and at the same temperature when

1 g

of

B

solid is dissolved in

20 g

of

A

, its vapour pressure is reduced to

9.0 torr

. If the molecular mass of

A

is

200 amu

, then the molecular mass of

B

is: