In a hydrocarbon-based combustion reaction, what two molecules are most likely to be products?

A. carbon dioxide and water
B. sulfur dioxide and zinc oxide
C. sulfur dioxide and cyclopentane
D. carbon monoxide and hydroxide

Hydrocarbons consist of C and H.

C is oxidized to CO2.
H is oxidized to H2O.

A. carbon dioxide and water

To determine the products of a hydrocarbon-based combustion reaction, we need to understand the general equation for this type of reaction. In a hydrocarbon combustion reaction, a hydrocarbon fuel reacts with oxygen to produce carbon dioxide and water. Therefore, the most likely products of the reaction are carbon dioxide (CO2) and water (H2O).

So, the correct answer is A. carbon dioxide and water.