ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.11

MEDIUM

12th ICSE

IMPORTANT

Earn 100

$2.46 g$ of sodium hydroxide (molar mass $= 40$ ) are dissolved in water and the solution is made to $100 {cm}^{3}$ in a volumetric flask. Calculate the molarity of the solution.

Important Questions on Solutions

MEDIUM

12th ICSE

IMPORTANT

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

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}

.

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.

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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.

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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.

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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.

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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?