JAMB UTME - Chemistry - 2016 | Green Bridge CBT

Question 1 Report

Ethanol is soluble in water due to the presence of a

Carbonyl group

Hydroxyl groupd

Phenyl group

Methyl group

Answer Details

Ethanol is soluble in water due to the presence of a hydroxyl group (-OH). The hydroxyl group allows ethanol to form hydrogen bonds with water molecules, which results in the molecule's solubility in water. A carbonyl group (-C=O) would make a molecule less soluble in water, as the carbonyl group is a polar functional group that would interact less favorably with water molecules. A phenyl group (-C6H5) is a hydrophobic group that would also make a molecule less soluble in water. A methyl group (-CH3) is also a hydrophobic group that would make a molecule less soluble in water.

Read lesson note on Solubility Of Substances (Ghana Only) (WAEC)






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