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How is ascorbic acid oxidized into dehydroascorbic acid? What is the reduction reaction in this case? Where are the 2 hydrogen atoms going? Oxidation of Ascorbic Acid

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    $\begingroup$ We have a policy which states that ‎you should show your thoughts, effort and attempts to understand underlaying principles. It'll make us certain that ‎we aren't doing your homework for you, and that the Q/A is beneficial for broad audience. Basically any question with the wording your question has is considered homework; it needn't be literally one. It can be self-study questions, puzzles, worked examples etc. Please edit in your full reasoning or thoughts on this. See Homework Otherwise, the question may get closed.‎ $\endgroup$ – Poutnik Jul 25 at 2:35
  • $\begingroup$ I think this question is too broad, it would be useful to see it narrowed down. Also, a little searching reveals some good hits explaining possible mechanisms. The underlying question (is there a duplicate?) seems very interesting (if, again, broad): what is the biochemical mechanism of oxidation of ascorbic acid. $\endgroup$ – Buck Thorn Jul 25 at 20:13
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Think of oxidation in a classical sense for a minute or so. Oxidation is addition of oxygen to a molecule or it can also mean removal of hydrogen. If you carefully look at the structure of ascorbic acid, you will see that the two -OH groups are now converted into carbonyl groups. Those two hydrogens can be lost as a proton, H+.

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