ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.12

MEDIUM

12th ICSE

IMPORTANT

Earn 100

Concentrated nitric acid used as a laboratory reagent is usually $69 %$ by mass of nitric acid. Calculate the volume of the solution which contained $23 g$ of ${HNO}_{3}$ . Density of conc. ${HNO}_{3}$ solution is $1.41 g {cm}^{- 3}$ .

Important Questions on Solutions

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.13

100 {cm}^{3}

of a centimolar solution of an acid contain

0.098 g

of the acid. Find the molecular mass of the acid.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.14

Calculate the mole fraction of ethyl alcohol and water in a solution in which

46 g

of ethyl alcohol and

180 g

of water are mixed together.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.15

The density of

3 M

aqueous solution of sodium thiosulphate is

1.25 g / mL

. Calculate mole fraction of sodium thiosulphate.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.15

The density of

3 M

aqueous solution of sodium thiosulphate is

1.25 g {mL}^{- 1}

. Calculate molalities of

{Na}^{+}

and

S_{2} {O_{3}}^{2 -}

ions.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.16

8.0575 \times 10^{- 2} kg

Glauber's salt are dissolved in water to obtain

1 {dm}^{3}

of a solution of density

1077.2 kg m^{- 3}

. Calculate the molarity, molality and mole fraction of

{Na}_{2} {SO}_{4}

in the solution.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.17

The mole fraction of benzene in a solution in toluene is

0.40

. Calculate the weight per cent of benzene in the solution.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.18

A solution contains

410.3 g

of

H_{2} {SO}_{4}

per litre of the solution at

20 ° C

. If its density is

1.243 g {cm}^{- 3}

, what will be its molality and molarity?

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.19

The solubility of

Ba (OH)_{2} . 8 H_{2} O

in water at

288 K

is

5.6 g

per

100 g

of water. What is the molality of the hydroxide ions in the saturated solution of barium hydroxide at

288 K

? (Atomic masses :

Ba = 137, O = 16, H = 1

).