Question

CycloHeptene +O3/H2O

Answer 1

Heptanedial ($CHO-(CH_2)_5-CHO$)

Answer 2

The reaction is the ozonolysis of cycloheptene followed by hydrolysis. Ozonolysis cleaves the carbon-carbon double bond ($C=C$) in an alkene. The two carbons that formed the double bond are converted into carbonyl groups ($C=O$). In the case of cycloheptene, which is a cyclic alkene with 7 carbon atoms, the double bond is between two secondary carbons (CH=CH). The cleavage opens the ring, forming a linear molecule where the two carbons of the original double bond become aldehyde groups (CHO) because they were originally CH groups. The remaining five CH₂ groups form the chain between these two aldehyde groups. The resulting product is a dialdehyde with seven carbon atoms, named Heptanedial (Heptane-1,7-dial).