Solutions Test ...

Select correct statement -

Total vapour pressure of mixture of 1 mol volatile component A(pº_A = 100 mmHg) and 3 mol of volatile component B (pº_B = 60 mmHg) is 75 mm. For such case -

At a given temperature, total vapour pressure in Torr of a mixture of volatile components A and B is given by

P = 120 – 75 X_B

hence, vapour pressure of pure A and B respectively (in Torr) are -

Van't Hoff factors of aqueous solutions of X, Y, Z are 1.8, 0.8 and 2.5. Hence, their (assume equal concentrations in all three cases) then correct order is :-

Decimolar solution of potassium ferricyanide, K₃[Fe(CN)₆] has osmotic pressure of 3.94 atm at 27ºC. Hence percent ionisation of the solute is -

An aqueous solution of urea containing 18 g urea in 1500 cm³ of solution has a density of 1.052 g/cm³. If the molecular weight of urea is 60, then the molality of solution is-

2.56 g of sulphur in 100 g of CS₂ has depression in f.p. of 0.010º, K_f = 0.1º (molal)^-1. Hence, atomicity of sulphur is -

Consider following solutions -

I : 1 M a glucose II. : 1 M a sodium chloride

III. : 1 M benzoic acid in benzene IV. : 1 M ammonium phosphate

Select incorrect statement -

The relationship between osmotic pressure at 273 K when 10 g glucose (P₁) 10 g urea (P₂) and 10 g sucrose (P₃) are dissolved in 250 ml of water is -

The osmotic pressure of a solution of benzoic acid dissolved in benzene is less than expected because-

Assuming each salt to be 90% dissociated, which of the following will have highest osmotic pressure

Which one of the following pairs of solution can we expect to be isotonic at the same temperature-

For a solution containing non-volatile solute, the relative lowering of vapour pressure is 0.2. If the solution contains 5 moles in all, which of the following are true ?

I. Mole fraction of solute in the solution is 0.2
II. No. of moles of solute in the solution is 0.2
III. No. of moles of solvent in the solution is 4
IV. Mole fraction of solvent is 0.2 -

A complex containing K^+, Pt (IV) and Cl^- is 100% ionised giving i = 3. Thus, complex is

If pK_a = -log K_a = 4, and K_a = Cα² then van't Hoff factor for weak monobasic acid when C = 0.01 M is-

pH of 1M HA (weak acid) is 2. Hence van't Hoff factor is -

In which case van't Hoff factor is maximum

If 18 gram of glucose (C₆H₁₂O₆) is present in 1000 gram of an aqueous solution of glucose it is said to be-

What is the molarity of H₂SO₄ solution that has a density of 1.84 gm/cc at 35⁰C and contains 98% by weight-

In order to prepare 100 cm³ of 0.250 M barium chloride solution the amount of BaCl₂.2H₂O required will be-

25 mL of 3 M HCl were added to 75 mL of 0.05 M HCl. The molarity of HCl in the resulting solution is approximately-

0.2 mole of HCl and 0.1 mole of CaCl₂ were dissolved in water to have 500 ml of solution, the molarity of Cl¯ ions is-

When 5.0 gram of BaCl₂ is dissolved in water to have 10⁶ gram of solution. The concentration of solution is-

For an ideal binary liquid solution with , which relation between X_A(molefraction of A in liquid phase) and Y_A (mole fraction of A in vapour phase) is correct?

Mole fraction of A vapours above the solution in mixture of A and B(X_A = 0.4) will be

[Given :  = 100 mm Hg and  = 200 mm Hg]

The exact mathematical expression of Raoult's law is

A mixture contains 1 mole of volatile liquid A ( = 100 mm Hg) and 3 moles of volatile liquid B(= 80 mmHg). If solution behaves ideally, the total vapour pressure of the distillate is

Which of the following aqueous solution will show maximum vapour pressure at 300 K?

The Van't Hoff factor for a dilute aqueous solution of glucose is

The correct relationship between the boiling points of very dilute solution of AlCl₃(T₁K) and CaCl₂(T₂K) having the same molar concentration is