[xessencex]

I am kind of having trouble finding 2 chemical reactions for ascorbic acid, it could be any, as long it involves ascorbic acid. Thanks.

[Alberto_Kravina]

Well, one important reaction of ascorbic acid is it's "strong" acidity, even though it doesn't contain any carboxylate (-COOH) group. Another reaction is the Keto-Enol tautomerism (the transfer of a proton causes an equilibrium between two isomers)

...google for details...

[Yggdrasil]

In the body, vitamin C (L-ascorbic acid) participates in may important reactions.  One reaction is a reaction with a free radical to quench the radical and generate a resonance-stabilized ascorbate radical which is not reactive and won't do any cellular damage.  Another reaction is the hydroxylation of proline and lysine in collagen, and important structural protein.  Most of the effects of vitamin C defficiency (scurvy) come from the lack of vitamin C for collagen biosynthesis.