The number of pi-bonds and lone pair(s) prese | vedclass

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(B) The reaction of benzene with acetyl chloride in the presence of anhydrous $AlCl_3$ is a Friedel-Crafts acylation reaction,which yields acetophenon

Vedclass · Accepted Answer

$4 : 2$

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(B) The reaction of benzene with acetyl chloride in the presence of anhydrous $AlCl_3$ is a Friedel-Crafts acylation reaction,which yields acetophenone $(C_6H_5COCH_3)$ as the major product.In the structure of acetophenone:$1$. The benzene ring contains $3$ $\pi$-bonds.$2$. The carbonyl group $(C=O)$ contains $1$ $\pi$-bond.Total number of $\pi$-bonds = $3 + 1 = 4$.$3$. The oxygen atom in the carbonyl group has $2$ lone pairs of electrons.Total number of lone pairs = $2$.Thus,the number of $\pi$-bonds and lone pairs are $4$ and $2$ respectively.

The number of $\pi$-bonds and lone pair$(s)$ present in the major benzenoid product,which is formed when benzene reacts with acetyl chloride in the presence of anhydrous aluminium chloride,are respectively:

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