Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 21

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If density of a solvent is greater than ${1 kg dm}^{-3}$ , then the molarity $(M)$ and molality $(m)$ are related as_____.

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Important Questions on Solutions

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IMPORTANT

Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 22

The solubility of nitrogen gas at

2

atm pressure at

25^{0} C

is

{13.6 × 10}^{-4} {, mol dm}^{-3}

. Calculate the solubility of

N_{2}

gas from atmosphere at

25^{0} C

, if atmospheric pressure is

2

atmosphere and the partial pressure of

N_{2}

gas at this temperature and pressure is

1.56

atm.

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 23

The solubility of oxygen gas at

25^{0} C

at atmospheric pressure is

{1.43×10}^{-4} {mol dm}^{-3}

. Calculate the partial pressure of oxygen, if the Henry's law constant for oxygen is

{0.65×10}^{-4} {mol dm}^{-3} {atm}^{-1}

.

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 24

Amalgams are a solution of _______.

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 25

Which of the following statements is TRUE about solid solutions?

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 26

The density (

in g {mL}^{-1}

) of a

3.6 M

sulphuric acid solution that is

29 %

H_{2} {SO}_{4}

(Molar mass =

{98 g mol}^{-1}

) by mass will be______

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 27

How many grams of concentrated nitric acid solution should be used to prepare

250 mL

of

2.0 M

{HNO}_{3}

? The concentrated acid is

70 %

{HNO}_{3}

.

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 28

When

20 g

of naphthoic acid

(C_{11} H_{8} O_{2})

is dissolved in

50 g

of benzene (

K_{f} = 1.72 K kg {mol}^{- 1}

), a freezing point depression of

2 K

is observed. The Van't Hoff factor

(i)

is:

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 3>Q 29

The 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 that are dissolved in $10$ moles of water at $298 K$ and $5 atm$ pressure is: