ICSE Chemistry>Chapter 2 - Solutions>NUMERICAL PROBLEMS>Q 13

MEDIUM

12th ICSE

IMPORTANT

Earn 100

Calculate the freezing point of an aqueous solution of a non-electrolyte having an osmotic pressure of $2.0 atm$ at $300 K$ .

Important Questions on Solutions

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>NUMERICAL PROBLEMS>Q 14

A solution of a non-volatile solute in water freezes at

- 0.30 ° C

. The vapour pressure of pure water at

298 K

is

23.51 mm Hg

and

K_{f}

for water is

1.86 degree / molal .

Calculate the vapour pressure of this solution at

298 K

.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>QUESTIONS FROM ISC EXAMINATION PAPERS>Q 1

The freezing point of nitrobenzene is

278.8 K

. A

0.25

molal solution of a substance (mol. wt.

= 120

) in nitrobenzene has a freezing point of

276.8 K

. Calculate the molal depression constant of nitrobenzene.

EASY

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>QUESTIONS FROM ISC EXAMINATION PAPERS>Q 2

Calculate the osmotic pressure of a solution containing

3.42 g

of sucrose in

1 litre

of water at

400 K

.

EASY

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>QUESTIONS FROM ISC EXAMINATION PAPERS>Q 3

What is colligative property? Give two examples.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>QUESTIONS FROM ISC EXAMINATION PAPERS>Q 3

The osmotic pressure of blood is

7.65 atm

at

27 ° C

. How much glucose should be used per litre to prepare an intravenous injection that has the same osmotic pressure as blood?

EASY

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>QUESTIONS FROM ISC EXAMINATION PAPERS>Q 4

Molality of a solution is independent of temperature. Comment.

EASY

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>QUESTIONS FROM ISC EXAMINATION PAPERS>Q 4

Calculate the mole fraction of water in sodium hydroxide solution which has

80 g

of

NaOH

and

54 g

of

H_{2} O

. (Relative atomic masses :

Na = 23, O = 16, H = 1

)

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>QUESTIONS FROM ISC EXAMINATION PAPERS>Q 5

The depression in the freezing point of a sugar solution was found to be

0.402 ° C

. Calculate the osmotic pressure of the sugar solution at

27 ° C

. (

K_{f} = 1.85 K kg {mol}^{- 1}

)