A reaction has a E rxn of 450 kJ/mol. The products have an energy of 20 kJ/mol.

A reaction has a ΔE_rxn of –450 kJ/mol. The products have an energy of 20 kJ/mol.

(a) Is the energy of the reactants higher or lower than that of the products? Explain.

(b) What is the energy of the reactants?

(c) Is the reaction exothermic or endothermic? How do you know?

(d) Does the reaction go uphill or downhill in energy?

(e) Draw a reaction-energy profile for the reaction.