Ozonolysis of but-2-ene followed by treatment with zinc and water gives ____.
Correct answer B. Two molecules of ethanal
Explanation
Ozonolysis splits the C=C bond and puts a C=O group on each carbon. But-2-ene, CH₃CH=CHCH₃, is symmetrical, so two molecules of ethanal, CH₃CHO, are formed. Zinc prevents oxidation to the acid.
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