Question

When ethylene glycol is heated with a mixture of concentrated hno3 and concentrated h2so4?

Answer 1

33260 - ethylene glycol on being distilled with concentrated H2SO4 gives 1. ethylene oxide 2. acetaldehyde .

Answer 2

When ethylene glycol is heated with a mixture of concentrated nitric acid (HNO3) and concentrated sulfuric acid (H2SO4), an esterification reaction occurs.

• This reaction is called the nitration of ethylene glycol. The reaction results in the formation of an intermediate product, nitric acid ethylene glycol ester, which is then hydrolyzed to form nitric acid and ethylene glycol.
• The overall reaction is as follows:

$C2H6O2 + HNO3 + H2SO4 - > C2H6O3NO3 + H2O$

$C2H6O3NO3 + H2O - > HNO3 + C2H6O2$

• The reaction is exothermic and releases heat, so it must be carried out with care to avoid dangerous temperature increases.
• The reaction produces toxic and corrosive nitric acid and sulfuric acid fumes, so it should only be performed in a well-ventilated laboratory or by a trained professional wearing appropriate personal protective equipment.

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