Question

A reaction of a hydrocarbon, in which carbon dioxide and water are produced, is classified as a

a. decomposition reaction.
c. double-displacement reaction.
b. combustion reaction.
d. synthesis reaction.

Answer 1

This is a combustion reaction. Any reaction in which a hydrocarbon decomposes into carbon dioxide and water is classified as combustion. The energy used for the decomposition usually comes from intense heat, which is why combustion of a hydrocarbon almost always is associated with a source of fire.