Abnormal Colligative Properties
Trending Questions
Q. 1 molal aqueous solution of an electrolyte A2B3 is 60% ionised. The boiling point of the solution at 1 atm is
Q.
When benzoic acid dissolve in benzene, the observed molecular mass is:
244
122
61
366
Q.
The observed osmotic pressure of a solution of benzoic acid in benzene is less than its expected value because
Benzene is a non-polar solvent
Benzoic acid molecules are associated in benzene
Benzoic acid molecules are dissociated in benzene
Benzoic acid is an organic compound
Q. The freezing point depression of a 0.10 m solution of HF(aq) solution is −0.201∘C. Calculate the percent dissociation of HF(aq).
- 6
- 9
- 10
- 8
Q. The density of a 0.438 M solution of potassium chromate at 298 K is 1.063 g cm−3. Calculate the vapour pressure of water above this solution. Given : P0 (water) = 23.79 mm Hg.
- 23.22
- 43.23
- 54.2
- 12.1
Q.
The degree of dissociation of Ca(NO3)2 in a dilute aqueous solution containing 7 g of salt in 100 g of water at 100∘C is 70%. The vapour pressure of solution is:
- 746.27 mm of Hg
- 745.27 mm of Hg
- 744.27 mm of Hg
- 743.27 mm of Hg
Q. A decimolar solution of potassium ferrocynide is 50% dissociated at 300 K. Given S=8.314JK−1 mol−1. The osmotic pressure of the solution is :
- 7.438×105 Nm−2
- 7.834×105 Nm−2
- 7.348×105 Nm−2
- 7.483×105 Nm−2
Q. 3.0×10−3 kg of acetic acid is added to 500 mL of water. 23% of acetic acid is dissociated. If Kf and density of water are 1.86Kkgmol−1 and 0.997 g/mL respectively. The depression in freezing point of acetic acid is :
- 0.227
- 0.229
- 0.231
- 0.233
Q. The boiling point of a solution containing 0.61 g of benzoic acid in 50 g of carbon disulphide assuming 84% dimerization of the acid, where boiling point and Kb of CS2 being 46.2∘C and 2.3 K kg mol−1 is :
- 46.3444∘C
- 46.3434∘C
- 46.3344∘C
- 46.3334∘C
Q.
The freezing point of equimolal aqueous solution will be highest for
- C6H5NH3Cl (aniline hydrochloride)
- Ca(NO3)2
- La(NO3)2
- C6H12O6 (glucose)
