Glycerol + periodic acid yields which product?

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Multiple Choice

Glycerol + periodic acid yields which product?

Explanation:
Periodate oxidation cleaves vicinal diols (1,2-diols) by breaking the bond between the two carbons bearing hydroxyl groups and converting each of those carbons into a carbonyl compound. Glycerol has 1,2-diols on its ends, so when periodate acts, the terminal CH2OH group is oxidized to an aldehyde, giving formaldehyde as a direct product. The remaining fragment forms another carbonyl-containing piece, but formaldehyde is the characteristic, easily identifiable product from this oxidative cleavage of glycerol.

Periodate oxidation cleaves vicinal diols (1,2-diols) by breaking the bond between the two carbons bearing hydroxyl groups and converting each of those carbons into a carbonyl compound. Glycerol has 1,2-diols on its ends, so when periodate acts, the terminal CH2OH group is oxidized to an aldehyde, giving formaldehyde as a direct product. The remaining fragment forms another carbonyl-containing piece, but formaldehyde is the characteristic, easily identifiable product from this oxidative cleavage of glycerol.

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