Hydrocarbons Question 42

Question: An alkene, on ozonolysis gives formaldehyde and acetaldehyde. The alkene is : [BVP 2004]

Options:

A) Ethene

B) Propene

C) Butene-1

D) Butene-2

Show Answer

Answer:

Correct Answer: B

Solution:

Propene gives formaldehyde and acetaldehyde on ozonolysis.

$ CH_2=CH.CH_3\xrightarrow{O_3} $

$ \overset{\underset{\hat{\ }}{\mathop{O}}}{\mathop{\overset{O}{\mathop{\overset{|}{\mathop{C}}}}H_2-\overset{O}{\mathop{\overset{|}{\mathop{C}}}}}}H.CH_3- $

$ \underset{H_2O_2}{\mathop{\xrightarrow{Zn/H_2O}}}HCHO+CH_3CHO $