Final product formed on reduction of glycerol | vedclass

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(C) When glycerol $(CH_2OH-CHOH-CH_2OH)$ is treated with excess hydroiodic acid $(HI)$,it undergoes a series of reactions:$1.$ First,it forms $1,2,3-t

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Propene

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(C) When glycerol $(CH_2OH-CHOH-CH_2OH)$ is treated with excess hydroiodic acid $(HI)$,it undergoes a series of reactions:$1.$ First,it forms $1,2,3-triiodopropane$,which is unstable and loses $I_2$ to form allyl iodide $(CH_2=CH-CH_2I)$.$2.$ Allyl iodide reacts with another molecule of $HI$ to form $1,2-diiodopropane$,which is also unstable and loses $I_2$ to form propene $(CH_3-CH=CH_2)$.$3.$ Thus,the final stable product obtained under these conditions is propene.

Final product formed on reduction of glycerol by hydroiodic acid is

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