Alcohols Phenols and Ethers - Result Question 9

####9. H2COH⋅CH2OH on heating with periodic acid gives:

[2009]

(a) 2HCOOH

(b) CHO∣

(c) 2HH−C=O

(d) 2CO2

Show Answer

Solution:

  1. (c) 1,2-Diols, when treated with an aqueous solution of periodic acid give aldehyde or ketones

CH2OHCH2OH→HIO4CH2O+CH2O

A 1∘ alcohol on reaction with periodic acid gives CH2O. Since in glycol, both the OH groups are primary hence, 2 molecules of CH2O is formed as product.

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