The (triangle)hrxn of formation of carbon dioxide is negative. which statement is true? the reaction is endothermic. the reaction is exothermic. the amount of carbon dioxide is more than the amount of reactants. the amount of carbon dioxide is less than the amount of reactants.

The reaction is exothermic.

Explanation:

Enthalpy of Formation (): It is defined as change in enthalpy when one mole of substance is formed at standard temperature and pressure from its pure elements under same conditions.

1)

When the energy is released during formation of compound in a chemical reaction that is an Exothermic reaction.

2)

When the energy is absorbed during the formation of compound in a chemical reaction that is an Endothermic reaction

The of formation of carbon dioxide is negative means that the reaction is exothermic reaction.