This reaction is at room temperature, stardard temperature and pressure. Due to ascorbic acid, the solution goes slightly acidic. I'm trying to work out the reaction and figure out the gas produced. Is it possible that activated charcoal is involved with donating C? Is Vitamin C being cleaved to CO2?

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    $\begingroup$ Aside from trapped air bubbling out from the activated charcoal, nothing should happen in this allicin wonderland experiment. ;-) $\endgroup$
    – Ed V
    Nov 16 at 23:47