Question

The volume of 0.1 M H2SO4 required to neutralise completely 40 ml of 0.2 M NaOH solution is
a) 10 ml
b) 40 ml
c) 20 ml d) 80 ml​

Answer 1

Answer:

40 ml

Explanation:

neutralisation formula :-

Volume of acid × normality of acid = Volume of base × normality of base

Normality = molarity × n factor

so,

Normality of acid = 0.1 × 2 ( valency of so4 is 2 ) = 0.2

Normality of base = 0.2 × 1 ( valency of oh is 1 ) = 0.2

volume of acid × 0.2 = 40 × 0.2

volume of acid = 40 ml