The volume of 95% H₂SO₄ (density = 1.85 g cm^–3) needed to prepare 100 cm³ of 15% solution of H₂SO₄ (density = 1.10 g cm³) will be

(1) 5 cc

(2) 7.5 cc

(3) 9.4 cc

(4) 12.4 cc

The molarity of a $0.2\mathrm{N}{\mathrm{Na}}_2{\mathrm{CO}}_3$ solution will be [MP PMT 1987]

(1) 0.05 M

(2) 0.2 M

(3) 0.1 M

(4) 0.4 M

If 20 ml of 0.4 N NaOH solution completely neutralises 40 ml of dibasic acid. The molarity of acid solution is

(1) 0.1 M

(2) 0.2 M

(2) 0.3 M

(4) 0.4 M

H₂SO₄ solution whose specific gravity is 1.98 g ml^–1 and H₂SO₄ by volume is 95%. The molality of the solution will be

(1) 7.412

(2) 8.412

(3) 9.412

(4) 10.412

The density of H₂SO₄ solution is 1.84 g ml^–1. In a 1 litre solution if H₂SO₄ is 93 % by (w/v) then the molality of the solution is -

A solution contains 16 gm of methanol and 90 gm of water, mole fraction of methanol is

(1) 0.90

(2) 0.090

(3) 0.1

(4) 1.9

A solution has 25% of water, 25% ethanol and 50% acetic acid by mass. The mole fraction of each component respectivelywill be

(1) 0.50, 0.3, 0.19

(2) 0.19, 0.3, 0.50

(3) 0.3, 0.19, 0.5

(4) 0.50, 0.19, 0.3

34.2 g of cane sugar is dissolved in 180 g of water. The relative lowering of vapour pressure will be

(1) 0.0099

(2) 1.1597

(3) 0.840

(4) 0.9901

Lowering in vapour pressure is the highest for:

1. 0.2 m urea

2. 0.1 m glucose

3. 0.1 m MgSO₄

4. 0.1 m BaCl₂

The Vapour pressure of CCl₄ at 25°C is 143 mm Hg. 0.5 g of a non-volatile solute (mol. wt. 65) is dissolved in 100 ml of CCl₄. The vapor pressure of the solution is-

(Density of CCl₄ = 1 .58 g/cm³$)$ 

1. 141.93 mm Hg

2. 94.39 mm Hg

3. 199.34 mm Hg

4. 143.99 mm Hg