Question

Glycol reacts with anh. ZnCl2 to give​

Answer 1

Ethylene glycol ( -HO−CH2 - CH2−OH- )

ZnCl2 removes water form the reactant is its function.

see the attachment

Answer 2

Answer:

When glycol reacts with anh. ZnCl2 gives acetaldehyde.

Explanation:

Glycol:

• Glycol is a chemical compound that is a diol containing two hydroxyl groups.
• In a clinical setting, the most commonly encountered glycol is ethylene glycol.

Glycol has a formula of C₂H₄(OH)₂, when it is reacted with anhydrous ZnCl₂ it follows the following steps:

Step(1): Glycol in the presence of anh. ZnCl₂ removes water from the glycol and we will be left with CH₂CHOH.

Step(2): Then the compound formed in step (1) will undergo tautomerism with the shift of the double bond present between the first and second carbon to the bond present between the carbon and oxygen resulting in the formation of acetaldehyde.

Therefore, when glycol reacts with anh. ZnCl2 gives acetaldehyde.

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