EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2021>Q 1

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IMPORTANT

Earn 100

Henry's law constant for the solubility of $N_{2}$ gas in water at $298 K$ is $1.0 \times 10^{5}$ atm. The mole fraction of $N_{2}$ in air is $0.8$ The number of moles of $N_{2}$ from air dissolved in $10$ moles of water at $298 K$ and $5$ atm pressure is

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Important Questions on Solutions

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KCET (UG)

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2021>Q 2

Choose the correct statement

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2021>Q 3

The

K_{H}

value

(K

bar) of argon

(I),

carbon dioxide

(II)

, formaldehyde

(III)

and methane

(IV)

are respectively

40.3, 1.67, 1.83 \times 10^{- 5}

and

0.413

at

298 K .

The increasing order of solubility of gas in liquid is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2021>Q 4

The vapour pressure of pure liquids

A

and

B

are

450

and

700 mm

of

Hg

at

350 K

respectively. If the total vapour pressure of the mixture is

600 mm

of

Hg,

the composition of the mixture in the solution is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2019>Q 5

Solution

A

contains acetone dissolved in chloroform and solution

B

contains acetone dissolved in carbon disulphide. The type of deviations from Raoult’s law shown by solutions

A

and

B

, respectively are

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2019>Q 6

Relative lowering of vapour pressure of a dilute solution of glucose dissolved in

1 kg

of water is

0.002

. The molality of the solution is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2020>Q 7

Solute

' X'

dimerises in water to the extent of

80 %

.

2.5 g

of

' X'

in

100 g

of water increases the boiling point by

0.3 ° C

. The molar mass of

' X'

is

[K_{b} = 0.52 K {kgmol}^{- 1}]

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2019>Q 8

A non-volatile solute,

{}^{'}A^{'}

tetramerises in water to the extent of

80 %

,

2.5 g

of

{}^{'}A^{'}

in

100 g

of water, lowers the freezing point by

0.3 ° C

. the molar mass of

A

in

g {mol}^{- 1}

is (

K_{f}

for water

= 1.86 K kg {mol}^{- 1}

)

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - Solutions>KCET (UG) 2020>Q 9

Which of the following pair of solutions is isotonic?