6.5 Tutorial Questions Topic 6 From the second law of themodynamics an equation was derived that allows chemical reaction equilibria to be investigated. This derivation was based on ideal mixtures of ideal gases; these are two separate conditions that can be dropped (independently), so that real systems may be described with greater accuracy, as needed In particular it has been shown in the body of the notes: xf=K(PP)v And K=et02 1. LE CHATELER'S PRINCIPLE FOR THE PRESSURE Investigate the pressure dependence of chemical equilbrium and derive Le Chatelier's Principle (for pressure) from these considerations. 2. LE CHATEUER'S PPANCIPLE FOR THE TEMPERATURE Derive Le Chatelier's Principle (for temperature) from the temperature dependence of the equilibrium constant. It may be found easier to investigate h K and then justify why, to reach this goal, one should study hK instead of K itself. 3. ENDOTHERMIC REACTIONS Explain what drives an endothermic reaction. OHERIOT-WATT UNIVERSITY B48BC November 2016v3 Tutorial Topic 6 Questions 2 4. BACK TO THE 2ND LAW Show that the condition for a spontaneous chemical reaction leads back to the second law