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Topic: why is sulfuric acid needed in redox titration  (Read 27007 times)

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hydrowire

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why is sulfuric acid needed in redox titration
« on: September 09, 2005, 12:14:27 PM »
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!

Offline Mitch

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Re:why is sulfuric acid needed in redox titration
« Reply #1 on: September 09, 2005, 12:54:27 PM »
Write down the chemical equation for us, and it should become clear.  ;)
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Offline sdekivit

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Re:why is sulfuric acid needed in redox titration
« Reply #2 on: September 09, 2005, 01:39:51 PM »
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.

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