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

MEDIUM

12th ICSE

IMPORTANT

Earn 100

The density of $3 M$ aqueous solution of sodium thiosulphate is $1.25 g / mL$ . Calculate mole fraction of sodium thiosulphate.

Important Questions on Solutions

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

).

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.2

Calculate molality of

1

litre solution of

90 % H_{2} {SO}_{4}

(weight/volume). The density of solution is

1.80 g {mL}^{- 1}

.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.21

Calculate the number of molecules of oxalic acid

(H_{2} C_{2} O_{4} . 2 H_{2} O)

in

100 mL

of

0.2 N

oxalic acid solution.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.22

150 {cm}^{3}

of a decimolar

NaOH

solution are diluted to

750 {cm}^{3}

. Find the molarity of the diluted solution.