Identify the compound formed when ethylene combines with water in the presence of 10% sulphuric acid and HgSO4 as a catalyst:
Correct answer: D. Glycol
- A. Carbonal
- B. Methanol
- C. Ethanol
- D. Glycol
Explanation
(D) is correct because the product of this reaction is ethylene glycol, which is a colorless, odorless, and slightly viscous liquid. Ethylene glycol is commonly used as a coolant in automotive engines, as a solvent in the chemical industry. The reaction between ethylene and water is an example of an addition reaction. The presence of sulfuric acid and HgSO4 as a catalyst helps to initiate the reaction and increase the reaction rate.
This question appeared on the ETEA MDCAT 2009 paper, which you can sit online with every answer explained.
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About Alcohols
Alcohols contain a hydroxyl group attached to a saturated carbon atom and are classified as primary, secondary or tertiary. Their nomenclature, hydrogen bonding, acidity, oxidation, dehydration, reaction with sodium and conversion to haloalkanes are covered, along with the distinction between alcohols and phenols, where the hydroxyl group is attached directly to an aromatic ring.
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