Which of the following compounds has the highest boiling point? 2-pentanone pentene chloropentane pentane

chloropentane

Explanation:

When a hydrocarbon has a halogen atom, its properties will change because this group has a higher molecular weight and a higher polar moment that will be hard to defeat in order to reach the boiling point.

The Boiling point of the pentene is 30°C // pentane is 36,1°C //  2-pentanone is 101°C and chloropentane 108°C.

Simple hydrocarbons have lower boiling points compare with those with a functional group like the Oxygen in the 2-pentanone and the Chlorine in the  chloropentane. On the other heand,  Oxygen is not as electronegative and heavy like Chlorine, thus the chloropentane is the one with higher boiling point.

the ratio of the conjugate base to the acid required to attain the desired ph.