Decide whether each of the following statements is true or false. If false, rewrite the sentence to make it true. Explain in complete sentences why you had to change the false statements. a. An exothermic reaction will always be a spontaneous reaction. b. Reactions with a positive Δ�!"# ° and a positive Δ�!"# ° can never be product-favored. c. The entropy of a substance increases when changing from the liquid to the vapor state at any temperature. d. Reactions with a negative Δ�!"# ° and a negative Δ�!"# ° are spontaneous at any temperature.