WAEC Chemistry 2013 Objective — Question 42
Question 42 of 50 from the West African Examinations Council (WAEC) Chemistry 2013 Objective paper, with the correct answer and a full explanation.
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The IUPAC name of the compound (CH3)2CHCH(NH2)COOH is
- A. 2-amino hexanoic acid
- B. 2-amino-4-methyl pentanoic acidCorrect
- C. 2, 4-dimethyl butanoic acid
- D. 4-amino pentanoic acid
Explanation
The longest continuous chain has five carbon atoms with a carboxyl functional group. Thus, the parent name is pentanoic acid. Amino group (–NH2) is attached to carbon–2 while methyl is attached to carbon–4. Thus, the name is 2-amino-4-methylpentanoic acid.
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