Hydrogen gas and oxygen gas react violently to form water. a. Which is lower in energy: a mixture of hydrogen gases, or water? Explain. b. Sketch an energy-level diagram (like Figure 10.5) for this reaction and explain it.
15.7 LE CHÂTELIER’S PRINCIPLE - if a system at equil is disturbed by a change in temp, pressure, or a component [ ], the system will shift its equil position so as to counteract the effect of the disturbance CHANGE IN REACTANT OR PRODUCT CONCENTRATION - if a chem system is already at equil and the [ ] of any substance in the mixture is increased (either reactant or product), the system reacts to consume some of that substance. Conversely, if the [ ] of a substance is decreased, the system reacts to produce some of that substance - ex: N2(g) + 3H 2g) 2NH (g3 - adding H 2auses the rxn to shift to the right, consuming some N to 2roduce more NH 3 - removing NH ca3ses the reaction to shift to the right to form more NH 3 EFFECTS OF VOLUME AND PRESSURE CHANGES