Which of the following are correct with respect to an endothermic

reaction? I. The system absorbs heat. II. The enthalpy change is positive. III. The sum of the binding enthalpies of the reactants is greater than that of the products. A. I and II only B. I and III only C. II and III only D. I, II and III 9. Of those shown in the enthalpy diagram below, which quantity (s) is (are) influenced by the use of a catalyst? A. I only B. III only C. I and II only D. II and III only

pur-new-sol