Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 23

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Mole fraction of a non-electrolyte in aqueous solution is $0.07 .$ If $K_{f}$ is $1.86 ° {mol}^{- 1} kg$ , depression in f.p ${ΔT}_{f}$ , is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 25

Total vapor pressure of a mixture of

1

mole of volatile component

A (p_{A}^{o} = 100 mmHg)

and

3

moles of volatile component

B (p_{B}^{o} = 60 mmHg)

is

75 mm

. For such case:

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 26

A colligative property of a solution depends on the:

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 27

Which has maximum freezing point?

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 28

Select correct statements :

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 29

The vapor pressure of a pure liquid

A

is

40 mmHg at 310 K

. The vapor pressure of this liquid in a solution with liquid

B

is

32 mmHg

. Mole fraction of

A

in the solution, if it obeys Raoult’s law is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 30

Mole fraction of the toluene in the vapor phase which is in equilibrium with a solution of benzene

(p ° = 120 Torr)

and toluene

(p ° = 80 Torr)

having

2.0 mol

of each is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 32

Depression of freezing point of

0.01

molal aq.

{CH}_{3} COOH

solution is

0.02046 ° . 1

molal urea solution freezes at

- 1.86 ° C

. Assuming molality equal to molarity,

pH

of

{CH}_{3} COOH

solution is :

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-4>Q 33

Which of the following azeotropic solutions has the boiling point more than boiling point of the constituents

A

and

B

?