Equilibrium 0.0 / 5 ? ChemistryEquilibriaA2/A-levelOCR Created by: Abi9ai1Created on: 27-11-19 14:27 Define homogenous equilibrium All reactants are in the same state e.g. gas 1 of 19 Define heterogenous equilibrium Reactants are in different states e.g. reacting solid and aqueous. 2 of 19 What substances are not included in the equlibrium constant? Liquids and solids 3 of 19 What substances are included in the equilibrium constant? Gasses and solutions (aqueous) 4 of 19 What is the Kc expression for Cu(s) +2Ag (aq) <->Cu (aq)+2Ag(s) . 5 of 19 What is the Kc expression for CO(g)+2H (g) <->CH OH(g) . 6 of 19 What is partial pressure? The pressure that each gas would exert if it occupied the container alone. 7 of 19 What is the equation for mole fraction? Mole fraction = Moles of the gas / Total moles of gas 8 of 19 What is the equation for partial pressure? Partial pressure = Mole fraction X Total pressure 9 of 19 What is the Kp equation for CO(g)+2H (g) <->CH OH(g) . 10 of 19 What substances do you include in a Kp expression Only gasses. 11 of 19 In an exothermic reaction, when the temperature is increased what will happen according to Le Chatelier's principle? Equilibrium will shift left ( the endothermic direction). 12 of 19 In an exothermic reaction, when the temperature is increased what will happen to Kc and Kp They will have a lower value. 13 of 19 In an endothermic reaction, when the temperature is increased what will happen according to Le Chatelier's principle? Equilibrium will shift right (the endothermic direction). 14 of 19 In an endothermic reaction, when the temperature is increased what will happen to Kp and Kc? They will have a higher value. 15 of 19 What effect does pressure have on Kc? No effect 16 of 19 What effect does concentration have on Kc? No effect 17 of 19 How does adding a catalyst effect the position of equilibrium? It has no effect. 18 of 19 What effect does adding a catalyst have on Kc? No effect 19 of 19
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