Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 2

MEDIUM

11th CBSE

IMPORTANT

Earn 100

The concentration of $H_{2} {SO}_{4}$ in a bottle labelled “conc. Sulphuric acid” is $18 M$ . The solution has a density of $1.84 g {cm}^{- 3}$ . What is the mole fraction and weight percentage of sulphuric acid in this solution?

Important Questions on Some Basic Concepts of Chemistry

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 3

Calculate the molality of

1

litre solution of

93 %

H_{2} {SO}_{4}

(weight/volume). The density of the solution is

1.84 g {mL}^{- 1}

.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 4

Calculate the mole fraction of ethanol and water in a sample of rectified spirit which contains

95

per cent of ethanol by weight.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 5

The density of a

3 M {Na}_{2} S_{2} O_{3}

(sodium thiosulphate) solution is

1.25 g {cm}^{- 3}

. Calculate the percentage by weight of sodium thiosulphate.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 5

The density of a

3 M {Na}_{2} S_{2} O_{3}

(sodium thiosulphate) solution is

1.25 g {cm}^{- 3}

. Calculate the mole fraction of sodium thiosulphate.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 5

The density of a

3 M {Na}_{2} S_{2} O_{3}

(sodium thiosulphate) solution is

1.25 g {cm}^{- 3}

. Calculate the molality of

{Na}^{+}

and

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

ions.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 6

An aqueous solution of sodium chloride is marked

10 %

(

\frac{w}{w}

) on the bottle. The density of the solution is

1.071 g {mL}^{- 1}

. What is the molality and molarity? Also, what is the mole fraction of each component in the solution?

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 7

H_{2} {SO}_{4}

used in lead storage cell is

38 %

by mass and has a density of

1.30 g {cm}^{- 3}

. Calculate its molarity.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 1

Find the percentage composition of potassium chlorate (

{KClO}_{3}

).