Question

Column consists of two compounds (2-chloroheptane and butanoic acid). Which fractions contain only butanoic acid? Which fractions contain only 2-chloroheptane? Which are a mixture of the two?

a) Fraction 1: Butanoic Acid, Fraction 2: 2-Chloroheptane, Fraction 3: Mixture
b) Fraction 1: 2-Chloroheptane, Fraction 2: Butanoic Acid, Fraction 3: Mixture
c) Fraction 1: Butanoic Acid, Fraction 2: Mixture, Fraction 3: 2-Chloroheptane
d) Fraction 1: 2-Chloroheptane, Fraction 2: Mixture, Fraction 3: Butanoic Acid

Answer 1

Fraction 2 and Fraction 3 contain only butanoic acid, Fraction 1 contains only 2-chloroheptane, and Fraction 3 contains a mixture of both compounds.

Step-by-step explanation:

The fractions that contain only butanoic acid are Fraction 2 and Fraction 3. Butanoic acid is a carboxylic acid with the formula CH3CH2CH2COOH. It is a polar compound and can form hydrogen bonds. Fraction 1, on the other hand, contains 2-chloroheptane, which is a chlorinated hydrocarbon with the formula CH3(CH2)4CHClCH3. It is a nonpolar compound. Fraction 3 contains a mixture of both butanoic acid and 2-chloroheptane.