Question

(a) What is the general name of the organic compounds containing the $-\stackrel{O}{\stackrel{||}{C}}-$ group?
(b) Which of the following compounds contains a carboxylic acid group?
$C{H}_{3}OH,C{H}_{3}COOH,C{H}_{3}CHO,C{H}_{3}COC{H}_3$
(c) How would you name the following compound?
$H-\stackrel{H}{\stackrel{|}{C}}=0$

Answer 1

(a) The general name for the organic compounds comprising $-CO-$ is ketones.

(b) $C{H}_{3}COOH$ is the compound which contains a carboxylic acid group $(-COOH)$.

(c) The name of the compound is methanal, as the structure contains one carbon atom and an aldehyde group $(-CHO)$, which is indicated by using 'al' as the suffix. Hence, replacing the last letter 'e' of methane with 'al' we get the name methanal.