Calculate the molarity of 1 litre solution of 93% H₂SO₄ (weight/volume). The density of solution is 1.84 gm L^–1.

Solution

(i) Volume of solution = 1 L = 1000 mL
Density of solution = 1.84 g mL^–1Mass of solution = V x d
= (1000 mL) x 1.84 mL^–1= 18540 g
Mass of H₂SO₄ = 93g/100mL
93 x 10 = 930 g
Mass of solvent (water)
= 1840 – 930 = 910 g.
(ii) Molarity (m)

$= \frac{Mass of H_{2} {SO}_{4} / Molar mass of H_{2} {SO}_{4}}{Mass of water in kg}$
$Mass of H_{2} {SO}_{4} = 930 g, Molar mass of H_{2} {SO}_{4} = 98 g {mol}^{- 1} Mass of water = \frac{910 g}{1000} = 0.91 kg$

$Molarity (m) = \frac{930 g / 98 {mol}^{- 1}}{(0.91 kg)} = 10.43 mol {kg}^{- 1} = 10.43 m .$

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Solutions

Calculate the molarity of 1 litre solution of 93% H₂SO₄ (weight/volume). The density of solution is 1.84 gm L^–1.

Some More Questions From Solutions Chapter

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL at 37⁰C.

Suppose a solid solution is formed between two substances, one whose particles are very large and the other whose particles are very small. What kind of solid solution is this likely to be?

Amongst the following compunds identify which are insoluble, partially soluble and highly soluble in water?
(i) phenol (ii) toluene (iii) formic acid (iv) ethylene glycol (v) chloroform, (vi) pentanol.

Two liquids A and B boils at 145⁰C and 190⁰C respectively. Which of them has a higher vapour pressure at 80⁰C ?

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Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL at 370C.

Suppose a solid solution is formed between two substances, one whose particles are very large and the other whose particles are very small. What kind of solid solution is this likely to be?

Amongst the following compunds identify which are insoluble, partially soluble and highly soluble in water?(i) phenol (ii) toluene (iii) formic acid (iv) ethylene glycol (v) chloroform, (vi) pentanol.

Two liquids A and B boils at 1450C and 1900C respectively. Which of them has a higher vapour pressure at 800C ?

State the formula relating pressure of a gas with its mole fraction in a liquid solution in contact with it.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Calculate the molarity of 1 litre solution of 93% H₂SO₄ (weight/volume). The density of solution is 1.84 gm L^–1.

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL at 37⁰C.

Amongst the following compunds identify which are insoluble, partially soluble and highly soluble in water?
(i) phenol (ii) toluene (iii) formic acid (iv) ethylene glycol (v) chloroform, (vi) pentanol.

Two liquids A and B boils at 145⁰C and 190⁰C respectively. Which of them has a higher vapour pressure at 80⁰C ?