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Q. If the general formula for aldehyde is written as ${C_n H_{2n+1}CHO}$, the value of n for isobutyraldehyde is

Aldehydes Ketones and Carboxylic Acids

Solution:

Total number of $C$ atoms in isobutyraidehyde $(CH_3)_2CHCHO$ is four,
$\therefore $ Value of n should be $3$ in $C_nH_{2n+1} CHO$.
This reaction involves acylation. $CH_3COCH_3$ is not an acetylating agent.