If heat is added to a boiling liquid, what happens to the temperature of the liquid?
a. it increases.
b. it decreases.
c. it does not change.

C

Explanation:

Answer is "It does not change"

Hope this helps!

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.