Question

question 11 (1 point)
use the following information to answer the next question.
a carboxylic acid with a molecular formula of c₅h₁₁cooh is found in animal fats. it is known as hexanoic acid or caproic acid.
which of the following compounds is not an isomer of hexanoic acid?
a) 3 - methylpentanoic acid
b) 4 - methylpentanoic acid
c) 3,3 - dimethylbutanoic acid
d) 2,2 - dimethylpentanoc acid
e) all of the above are isomers.

Explanation:

Step1: Determine the molecular formula of hexanoic acid

Hexanoic acid has the formula \(C_6H_{12}O_2\) (from \(C_5H_{11}COOH\), count \(C\): \(5 + 1=6\), \(H\): \(11+1 = 12\), \(O\): \(2\)).

Step2: Analyze each option

• Option a: 3 - methylpentanoic acid has the formula \(C_6H_{12}O_2\)
• Option b: 4 - methylpentanoic acid has the formula \(C_6H_{12}O_2\)
• Option c: 3,3 - dimethylbutanoic acid has the formula \(C_6H_{12}O_2\)
• Option d: 2,2 - dimethylpentanoic acid has the formula \(C_7H_{14}O_2\) (count \(C\): \(5+ 2=7\), \(H\): \(11 + 3=14\), \(O\): \(2\))

Answer:

d) 2,2 - dimethylpentanoc acid