One mole of propane-1,2,3-triol (glycerol) is treated with excess periodic acid, HIO4. The number of moles of HIO4 consumed and the organic products are

2 mol; two molecules of methanal and one of methanoic acid

2 mol; one molecule of methanal and two of methanoic acid

2 mol; two molecules of methanal and one of methanoic acid

3 mol; three molecules of methanal

1 mol; methanal and 2-hydroxyethanal

JEE Advanced levelSingle correct optionDifficulty 3 of 3ap161

One mole of propane-1,2,3-triol (glycerol) is treated with excess periodic acid, $HIO X_{4}$ . The number of moles of $HIO X_{4}$ consumed and the organic products are

The first cleavage of the C1-C2 bond gives

HCHO

and 2-hydroxyethanal (

HOCH X_{2} - CHO

). This still has an

OH

and a carbonyl on adjacent carbons and is cleaved by a second

HIO X_{4}

HCHO

and

HCOOH

. Total: 2 mol

HIO X_{4}

, 2

HCHO

and 1

HCOOH