Question

$C{H}_3-C\equiv C-C{H}_3\stackrel{\left(i\right)X}{\underset{\left(ii\right)Zn/H_{2}O}{\to }}C{H}_3-\underset{O}{\underset{|}{C}}-\underset{O}{\underset{|}{C}}-C{H}_3$ in the reaction X is:

• A. $HN{O}_3$
• B. $O_2$
• C. $O_3$
• D. $KMn{O}_4$

Answer 1

The correct option is C $O_3$

In the reaction, $C{H}_3-C\equiv C-C{H}_3\stackrel{\left(i\right)X}{\underset{\left(ii\right)Zn/H_{2}O}{\to }}C{H}_3-\underset{O}{\underset{||}{C}}-\underset{O}{\underset{||}{C}}-C{H}_3$, X is $O_3$.
It is an example of reductive ozonolysis. The by product hydrogen peroxide is destroyed by zinc dust. This prevents further oxidation.