determine the strength of KMno4 solutionby titrating against M/10 oxalic acid solution
Answers
To determine the strength of KMnO₄ solution by titrating against M/10 oxalic acid solution is discussed below -
To calculate the strength of given KMnO4 in terms of molarity the following formula is used
- a₁M₁V₁ = a₂M₂V₂
Where a₁ and a₂ are the stoichiometric coefficients of oxalic acid and KMnO4 in a balanced chemical equation.
2KMnO₄ + 3H₂SO₄ + 5(COOH)₂ → K₂SO₄ + 2MnSO₄ + 8H₂O + 10CO₂↑
a₁ = 2
a₂ = 5
Where , M₂ and M₁ are molarities of potassium permanganate and oxalic acid solutions used in the titration respectively.
Where V₂ and V₁ are the volumes of potassium permanganate and oxalic acid solutions used in the titration respectively.
Therefore,
KMnO₄ = Oxalic acid
5M₂V₂ = 2M₁V₁
M₂ = (2M₁V₁/5V₂)
The strength of KMnO4 is calculated by using the molarity.