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Which of the following alkenes will produce exactly two molar equivalents of acetaldehyde () upon coHydrocarbons Chemistry Question

Question

Which of the following alkenes will produce exactly two molar equivalents of acetaldehyde ($CH_3CHO$) upon complete reductive ozonolysis (reaction with $O_3$ followed by $Zn/H_2O$)?

Answer: A,B

💡 Solution & Explanation

Reductive ozonolysis cleaves the $C=C$ double bond and places an oxygen atom on each carbon. Cleavage of symmetric 2-butene ($CH_3-CH=CH-CH_3$), whether in *cis* or *trans* form, produces two molecules of acetaldehyde ($CH_3CHO$). 1-butene yields formaldehyde and propanal. 2-methyl-2-butene yields acetone and acetaldehyde.

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