Topic 6 0.0 / 5 ? ChemistryEquilibriaASAQA Created by: Jemma1494Created on: 03-06-21 12:22 La chateliers principle Equilibrium of a reversible reaction will shift to resolve change if disturbed 1 of 12 What effect does increasing pressure have on equilibrium Equilibrium shifts towards the fewer gas molecules 2 of 12 What effect does increasing the concentration of a reactant have on equilibrium Equilibrium shifts towards the products 3 of 12 What effect does increasing temperature have on equilibrium Equilibrium sifts towards the endothermic direction 4 of 12 What effect does adding a catalyst have on equilibrium Equilibrium isn’t effected by a catalyst 5 of 12 ICE box Initial number of moles Change in number of moles Equilibrium number of moles 6 of 12 Kc constant If 3A + B ⇌ C + 2D Kc = (C)(D)^2/(A)^3(B) Unit comes for the number of moldm-3 in the equation 7 of 12 How does changing the temperature in an exothermic reaction effect Kc value Increases Kc value if temperature decreases Decreases Kc value if temperature increases 8 of 12 How does changing the temperature in an endothermic reaction effect Kc value Increased Kc value if temperature is increased Decreased Kc value if temperature is decreases 9 of 12 Ammonia production Compromised conditions to have the best yield from equilibrium position without being too expensive 20000kpa 380-450 °c Catalyst 10 of 12 ⇌ Reversible reaction 11 of 12 Equilibrium Both directions of a reaction occur at the same rate 12 of 12
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