What is the standard state of the substance?
Exothermic reactions are accompanied by the evolution of heat. It means that enthalpy of the reactants is more than the enthalpy of the products i.e.
Hr > Hp
But
What are exothermic and endothermic reactions?
Exothermic reactions are those reactions which are accompanied by the evolution of heat.
Endothermic reactions are those reactions which are accompanied by the absorption of heat.