Question

The titration of a 20.0-mL sample of an H2SO4 solution of unknown concentration requires 22.60 mL of a 0.158 M KOH solution to reach the equivalence point. What is the concentration of the unknown H2SO4 solution ? Express your answer in molarity to three significant figures.

Answer 1

M₁ = 0.178 M

Step-by-step explanation:

In case of titration , the following formula can be used -

M₁V₁ = M₂V₂

where ,

M₁ = concentration of acid ,

V₁ = volume of acid,

M₂ = concentration of base ,

V₂ = volume of base,

from , the question ,

M₁ = ?

V₁ = 20.0 mL

M₂ = 0.158 M

V₂ = 22.60 mL

Using the above formula , the molarity of the acid , can be calculated as ,

M₁V₁ = M₂V₂

M₁ * 20.0 mL = 0.158 M * 22.60 mL

M₁ = 0.178 M