Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 77

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Earn 100

The solubility of $KCl$ at a particular temperature is $25 g$ per $100 g$ of water. On adding $60 g$ of $KCl$ to the 100 g of water at the same temperature, how much salt remains undissolved?

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Important Questions on Solutions

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 78

Which of the following statement is incorrect regarding Henry's law?

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 79

The major components of air are

O_{2}

and

N_{2}

with an approximate proportion of

20 %

and

79 %

, respectively, by volume at

298 K

. The water is in equilibrium with air at a pressure of

20 atm

. At

298 K

, if

K_{H}

of oxygen is

3.30 \times 10^{7} mm of Hg

, then what is the mole fraction of

O_{2}

in water?

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 80

A solid dissolves in water exothermically. What happens if its saturated solution at

20 ° C

is cooled to

0 ° C

?

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 81

K_{H}

of

N_{2}

is

1 \times 10^{5} atm

. How many moles of

N_{2}

are dissolved in

10 mol

water (pressure of air is

5 atm

and mole fraction of

N_{2}

in air is

0.8

)?

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 82

The highest value of

K_{H}

is expected for (for dissolution in water)

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 83

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?

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

MHT-CET

IMPORTANT

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?