Aria asked in Science & MathematicsChemistry · 6 months ago

can citric acid be oxidized with potassium permanganate?

Update:

And would you mind to explain why?

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  • 6 months ago
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    I would expect it to, yes. Permanganate is a pretty powerful oxidant. The Mn will grab electrons if there are any loosely held ones nearby, and citric acid will definitely fit that bill. The permanganate anion has a lower stability range that is barely within the water-stable field (at the upper oxidation limit for water), so pretty well any organic carbon compounds would be expected to be oxidized. The manganese will almost oxidize the water itself. almost.

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  • 6 months ago

    A molecule of citric acid is shown in the link below.

    https://encrypted-tbn0.gstatic.com/images?q=tbn:AN...

    Each molecule of citric acid contains 5 C-C single bonds, 4 C-H single bonds, 3 -COOH groups and 1 tertiary -OH group, and all of them CANNOT be oxidized with potassium permanganate.

    Therefore, citric acid CANNOT be oxidized with potassium permanganate.

    • Bo6 months agoReport

      This simply is not true. Add citric acid to a solution of KMnO4 and watch it change color. Citric acid is oxidized and the permanganate is reduced to MnO2. Another reaction that may occur is that some of the permanganate is further reduced to Mn2+. This represents the "clear" product.

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  • Dr W
    Lv 7
    6 months ago
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