2 Cl2(9) + 2 H20(9) = 4 HCI(g) + 02(g) How will each of the following changes affect an equilibrium mixture of the 4 gases in this reaction? (a) O2(g) is added to the system. Select- (b) The reaction mixture is cooled. --Select- (c) The volume of the reaction vessel is doubled. --Select- (d) A catalyst is added to the reaction mixture. -Select (e) The total pressure of the system is increased by adding a noble gas. --Select-.. (1) HCI(g) is removed from the system. -Select-(a) Oz(9) is added to the system. ---Select--- The equilibrium will not shift. The equilibrium will shift toward product but Keq will not change. The equilibrium will shift toward reactant but Keq will not change. The equilibrium will shift toward product and Keq will increase. The equilibrium will shift toward reactant and Keq will decrease