(5 points) 1a. The following reaction is exothermic. Describe Which changes will shift the equilibrium to the left? List two. 2SO2(g)+O2(g)2SO3(g) b. For the above reaction, what would be the effect of an increase in pressure? (explain) c. Consider the following reaction at equilibrium. What effect will adding some C have on the system? EXPLAIN CO2(g)+C( graphite )2CO(g) d. What effect will increasing the pressure of the reaction mixture have on the system? EXPLAIN 2H2S(g)+3O2(g)2H2O(g)+2SO2(g)