Question

Select the correct IUPAC names of the given compounds.

(i) HCOOH

(ii)
(iii) $C_2{H}_{5}COO{C}_4{H}_9$

(iv) $C_3{H}_{7}COO{C}_2{H}_5$

(v) $C{H}_{3}CHO$

• A. Methanoic acid, Cyclohexane, Ethylpentanoate, Ethylbutanoate, Ethanol
• B. Methanal, Hexane, Ethylpentanoate, Ethylbutanoate, Ethanol
• C. Methanol, Cyclohexane, Ethylpentanoate, Ethylbutanoate,Ethanoate
• D. Methanoic acid, Cyclohexane, Ethylpentanoate, Ethylbutanoate, Ethanal

Answer 1

The correct option is D Methanoic acid, Cyclohexane, Ethylpentanoate, Ethylbutanoate, Ethanal

The IUPAC nomenclature is as follows:
i)As carboxylic functional group is present, the name will be methanoic acid
ii) Cyclic group is present and single bonds are present. Hence, the name will be
cyclohexane
iii) Presence of the ester group gives the suffix as oate. Hence, the name is
Ethylpentanoate
iv) Presence of the ester group gives the suffix as oate. Hence, the name is
Ethylbutanoate
v) Presence of an aldehydic group gives the suffix as -al. Hence, it is named as Ethanal