ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.71

MEDIUM

12th ICSE

IMPORTANT

Earn 100

Calculate the concentration of a solution of glucose which is isotonic at the same temperature with a solution of urea containing $6.2 g / L$ .

Important Questions on Solutions

HARD

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.72

Osmotic pressure of a solution containing

7.0 g

of a protein in

100 mL

of solution is

20 mm Hg

at

37 ° C

. Calculate the molecular mass of the protein.

(R = 0.0821 L atm K^{- 1} {mol}^{- 1})

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.73

Calculate the freezing point of an aqueous solution of a non-electrolyte having osmotic pressure of

2.0 atm

at

300 K

.

(K_{f} = 1.86 K kg {mol}^{- 1}, R = 0.0821 L atm K^{- 1} {mol}^{- 1})

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.74

A solution of sucrose (mol.wt.

342

) is prepared by dissolving

68.4 g

of it per litre of solution. What is the osmotic pressure at

300 K

?

(R = 8.314 k Pa {dm}^{3} K^{- 1} {mol}^{- 1})

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.75

Osmotic pressure of a solution containing

2 g

of a protein (soluble in water) per

300 {cm}^{3}

of the solution is

20 mm Hg

at

27 ° C

. Calculate the molecular mass of protein.

(R = 0.0821 L atm K^{- 1} {mol}^{- 1})

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.76

The osmotic pressure of blood is

8.21 atm

37 ° C

. How much glucose should be used per liter for an intravenous injection that is isotonic with blood?

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.77

The vapour pressure of a solution of urea is

736.2 mm

at

100 ° C

. Calculate the osmotic pressure of this solution at

15 ° C

.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.78

The boiling point of a glucose solution containing

12 g

of glucose in

100 g

of water is

100.34 ° C

. Calculate the molal elevation constant of water. Boiling point of water is

100 ° C

.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.79

A mixture of

1 g

naphthalene (Mol. mass

128

) and

10 g

camphor melts at

147 ° C

whereas pure camphor melts at

177.5 ° C

. What is cryoscopic constant (

K_{f}

) of camphor ?