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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: helloiamneedhelp on July 30, 2014, 07:39:56 AM

Title: Oxidation of Fe2+
Post by: helloiamneedhelp on July 30, 2014, 07:39:56 AM

Hey,

Why does Pokka Green Tea (ascorbic acid), Marigold Orange Juice (citric acid) and 100PLUS (carbonic acid) prevent Iron Sulphate from being oxidised by Potassium Permanganate?

Title: Re: Oxidation of Fe2+
Post by: Borek on July 30, 2014, 09:33:59 AM

Think: what reactions are possible in the solution containing Fe²⁺ and any of the mentioned substances? How these reactions interfere with a simple Fe²⁺ oxidation?