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The latent heat of vaporization of water is $9700 cal {mol}^{- 1}$ and the boiling point is $100 ° C$ . What is the ebullioscopic constant of water?

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Important Questions on Solutions

HARD

MHT-CET

IMPORTANT

Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 84

The freezing point of an aqueous solution is

- 0 . 186^{°} C

. What is the elevation of boiling point of the same solution if

K_{b} = 0.512 K

{molality}^{- 1}

and

K_{f} = 1.86 K

{molality}^{- 1}

HARD

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 85

A beaker containing

18 g

glucose in

100 g

water and another containing

18 g

of urea in

100 g

water are placed under a bell jar and the air is completely removed. After a course of time, when the equilibrium is reached, how much water will be transferred from one beaker to the other?

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 86

Just sufficient

{Al}_{2} {({SO}_{4})}_{3}

is added to

0.1 M

solution of

{BaCl}_{2}

such that all of it is precipitated as

{BaSO}_{4}

and the volume of the solution is maintained constant. Then:

HARD

MHT-CET

IMPORTANT

Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 87

The vapour pressure of an ideal solution containing $3 moles$ of $A$ and $2 moles$ of $B$ is $600 mm Hg .$ At the same temperature, if $2 moles$ of solute $A$ and $1 mole$ of non-volatile solid solute $C$ are added to this solution, the vapour pressure of the solution increases by $10 mm Hg .$ Then the vapour pressures of pure $A$ and $B$ (in $mm Hg)$ respectively are:

MEDIUM

MHT-CET

IMPORTANT

Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 88

A solution of

NaClO

contains

10 g

NaClO

in one litre. The normality of

NaClO

solution is:

(Na = 23, Cl = 35.5, O = 16)

HARD

MHT-CET

IMPORTANT

Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 89

The vapour pressure of two volatile liquid mixture is

P_{T} = 5.3 + 2 X_{B} (in cm of Hg)

where

X_{B}

is the mole fraction of

B

in mixture. The ratio of mole fraction of

A

and

B

in the vapour phase is

HARD

MHT-CET

IMPORTANT

Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 90

100 ° C,

benzene and toluene have a vapour pressure of

600

and

1000 torr

respectively. Assuming these two form an ideal solution, calculate the mole fraction of benzene in a solution that boils at

1 atm

and

100 ° C ?

HARD

MHT-CET

IMPORTANT

Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 91

The ratio of

{ΔT}_{b} / K_{b}

6 % \frac{w}{w} {AB}_{2}

and

9 % \frac{w}{w} A_{2} B ({AB}_{2}

and

A_{2} B

both are non-electrolytes) is

1 mol / kg

in both cases. Hence, atomic masses of

A

and

B

are respectively,

The latent heat of vaporization of water is 9700 cal mol-1 and the boiling point is 100°C. What is the ebullioscopic constant of water?

Important Questions on Solutions

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The latent heat of vaporization of water is $9700 cal {mol}^{- 1}$ and the boiling point is $100 ° C$ . What is the ebullioscopic constant of water?