ES - Le Chatelier's principle and the Deacon process Flashcards
What is Le Chatelier’s principle?
If a system is at equilibrium and a change is made in any of the conditions then the system will oppose the change.
What is the effect of increasing the concentration of reactants on the position of the equilibrium?
Moves right, to product side.
What is the effect of increasing the concentration of products on the position of the equilibrium?
Moves left, to reactant side.
What is the effect of decreasing the concentration of reactants on the position of the equilibrium?
Moves left, to reactant side.
What is the effect of decreasing the concentration of products on the position of the equilibrium?
Moves right, to product side.
What effect does increasing the pressure have on the rate of reaction?
Would increase the rate because there would be an increased collision frequency.
What effect does increasing the temperature have on the rate of reaction?
Increase the rate of reaction as the kinetic energy of the particles would increase so there would be an increased collision frequency and more particles ≥ activation energy so, greater probability of a successful collision.
What effect does decreasing the pressure have on the rate of reaction?
Would decrease the rate as there would be a decreased collision frequency.
What effect does decreasing the temperature have on the rate of reaction?
Decrease the rate of reaction as the kinetic energy of the particles would decrease so there would be a decreased collision frequency and less particles ≥ activation energy so, smaller probability of a successful collision.
What effect does increasing the pressure have on yield?
The equilibrium would shift to whichever side has fewer moles of gas so the yield would only increase if the forward reaction is favoured (if there are fewer molecules on the right hand side).
What effect does decreasing the pressure have on yield?
The equilibrium would shift to whichever side has most moles of gas so the yield would only increase if the forward reaction is favoured (if there are fewer molecules on the right hand side).
What effect does increasing the temperature have on yield?
Favours the endothermic reaction so if the forward reaction is favoured then yield would increase.
What effect does decreasing the temperature have on yield?
Favours the exothermic reaction so if the forward reaction is favoured then yield would increase.
