38) For the reaction: PCIs (g) PCl3 (g) + Cl2 (g) It is observed that greater amounts of PCI3 and Cl2 are produced as the temperature is increased. a) What is the sign of AS for the reaction? Explain. b) What change, if any, will occur in A G for the reaction as the temperature is increased? Explain. c) If He gas is added to the original mixture at constant volume and temperature, what will happen to the partial pressure of Cl2? Explain d) If the volume of the reaction mixture is decreased at constant temperature to half the original volume, what will happen to the number of moles of Cl2 in the reaction vessel? Explain.