Chapter 3, problem 21. An electrochemical battery is used toprovide 1 milliwatt (mW) of power for a (small) light. The chemicalreaction in the battery is: 1/2 N2 (g) + 3/2 H2 (g) → NH3 (g) a.What is the free-energy change for the reaction at 25o C, 1 bar? b.Calculate the free-energy change for the reaction at 50o C, 1 bar.State any assumptions made for this calculation. c. The limitingreactant in the battery is 100 g of H2. Calculate the maximumlength of time (seconds) the light can operate at 25o C.
