Propanoic acid occurs naturally as a result of the bacterial fermentation of milk and is partly responsible for the flavour of Swiss cheese. [Figure showing the structure of propanoic acid]. Which starting materials can be used to produce propanoic acid? 1 CH₃CH₂CH₂OH 2 CH₃CH₂CHO 3 CH₃CH₂CN
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✓ Correct answer
A: 1, 2 and 3 are correct
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