effect of changing conditions on equilibrium (HT) Flashcards
what happens if a system is at equilibrium and a change is made to any of the conditions?
the system will respond to counteract the change
how can the effects of changing conditions on a system at equilibrium be predicted?
Le Chatelier’s Principal
what happens if the concentration of one of the reactants or products is changed?
the system is no longer at equilibrium and the concentrations of all the substances will change until equilibrium is reached again
what happens if the concentration of one of the reactants is increased?
more products will be formed until equilibrium is reached again
what happens if the concentration of products is decreased?
more reactants will react until equilibrium is reached again
what happens if the temperature of a system at equilibrium is increased?
the endothermic reaction is favoured in an attempt to cool the system
what happens if the temperature of a system at equilibrium is decreased?
the exothermic reaction is favoured in attempt to heat the system
what happens in gaseous reactions where the pressure increases?
equilibrium position shifts towards the side with the smaller number of molecules as shown by the symbol equations for that reaction
what happens in gaseous reactions where pressure decreases?
equilibrium position shifts towards the side with the larger number of molecules as shown by the symbol equations for for that reaction
