Question

The normality of mixture obtained by mixing 100 ml of 0.4 M
H₂SO₄ and 200 ml of 0.2 M HCl is
(a) 0.0267 (b) 0.2670 (c) 1.0267 (d) 1.1670

Answer 1

The normality of mixture is 0.13 N

Explanation:

N = n × M

n = acidity of base or basicity of acid

M = molarity

N = normality

N₁ = 2×0.4           N₂ = 1 × 0.2

N₁ = 0.8 N            N₂ = 0.2 N

Normality of solution:

V₁N₁ - V₂N₂ / V₁+V₂

100 mL × 0.8 N  - 200 mL × 0.2 N / 100 mL + 200 mL

80 - 40 / 300

40/300

0.13 N