[hydrowire]

When we are doing redox titration, why we need to add sulfuric acid to our solution? lets say i want to titrate sodium oxalate(ethanedioate) with potassium manganate(VII), and have to add sulfuric into the oxalate first before doing the titration.

thx in advance!

[Mitch]

Write down the chemical equation for us, and it should become clear.  

[sdekivit]

When we are doing redox titration, why we need to add sulfuric acid to our solution? lets say i want to titrate sodium oxalate(ethanedioate) with potassium manganate(VII), and have to add sulfuric into the oxalate first before doing the titration.

thx in advance!

H2SO4 is a strong acid and will deliver H(+) which will help to proceed the reaction much faster. Thereby, the sulphate-ions barely react in a redoxreaction.

If we would take HCl for example, the Cl(-) ions can easily take part in a redoxreaction as a reductor.