All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 49

EASY

12th ICSE

IMPORTANT

Earn 100

Define molality in term of elevation in boiling point.

Important Questions on Solutions

MEDIUM

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 49

Derive the relation between elevation in the boiling point and the molecular mass of a non-volatile solute.

HARD

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 50

A

5 %

solution of cane sugar in water has a freezing point of

271 K

. Calculate the freezing point of

5 %

(by mass) solution of glucose in water. The freezing point of pure water is

273.15 K

. (Molar mass of cane sugar

= 342 g {mol}^{- 1}

, molar mass of glucose

= 180 g {mol}^{- 1}

)

MEDIUM

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 51

Explain, how the measurement of depression in freezing point can be used for the determination of molecular masses of non-volatile solutes?

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 52

Discuss biological and industrial importance of osmosis.

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 53

If the membrane used for the determination of osmotic pressure is slightly torn, how will it influence the measured value of osmotic pressure?

MEDIUM

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 53

The boiling point of benzene is

353.23 K

. When

1.80 g

of non-volatile solute was dissolved in

90 g

of benzene, the boiling point of is raised to

354.11 K

. Calculate the molar mass of the solute. (

K_{b}

for benzene is

2.53 K Kg {mol}^{- 1}

)

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 54

Why does the use of pressure cooker reduce cooking time?

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 2 - Solutions>Chapter Practice>Q 54

How does Van't Hoff factor helps in the determination of degree of association or dissociation of a solute in solution?