The best example of a chemical reaction that has a gas as a product is baking soda in vinegar.
A chemical reaction is one that involves the formation of a new product and is irreversible.
This means that a chemical reaction is characterized by the following:
The reaction between vinegar and baking soda will lead to the formation of gaseous products, hence, it is an example of chemical reaction.
Therefore, the best example of a chemical reaction that has a gas as a product is baking soda in vinegar.
Learn more about chemical reaction at: https://brainly.com/question/19694949