Question

Which of the following has the list of compounds in the correct order of decreasing boiling point (higher boiling point > lower boiling point)?

a. chloromethane > 2-chloro-2-methylpropane > 2-chloropropane > chloroethane
b. chloromethane > chloroethane > 2-chloropropane > 2-chloro-2-methylpropane
c. 2-chloro-2-methylpropane > 2-chloropropane > chloroethane > chloromethane
d. chloroethane > chloromethane > 2-chloro-2-methylpropane > 2-chloropropane

Answer 1

The correct answer is option c.

Step-by-step explanation:

The boiling point of chloromethane is -24.2 degree C, the boiling point of 2-chloropropane is 35 degrees C, the boiling point of chloroethane is 12.3 degrees C, and the boiling point of 2-chloro-2-methylpropane is 51 degrees C. Thus, the order of decreasing boiling point is 2-chloro-2-methylpropane>2-chloropropane>chloroethane>chloromethane. Hence, the correct answer is option c.