Describe what equilibrium means.
reaction is reversible and can occur in both directions.
Describe what occurs at the point when equilibrium is reached
In a closed system, reversible reactions attain a state of dynamic equilibrium when the rates of forward and reverse reactions are equal.
Describe the concentrations for the products and reactants at equilibrium.
At equilibrium, the concentrations of reactants and products remain constant, but are rarely equal.
State which side of a reaction desired to be in favour for chemical reactions
The forward reaction.
Describe what effect the addition of a catalyst has on equilibrium
increases the rates of the forward and reverse reactions equally. The catalyst increases the rate at which equilibrium is achieved. does not vhange position of equilibruim.
Describe what the addition of a catalyst does not have on equilibrium
catalyst does not affect the position of equilibrium.
Describe what effect increasing the temperature has on equilibrium.
Favours the direction of the endothermic reaction.
Describe what effect decreasing the temperature has on equilibrium.
Favours the direction of the exothermic reaction.
Describe what effect increasing the pressure has on equilibrium
Favours the direction of the side which has the least moles of gas.
Describe what effect decreasing the pressure has on equilibrium.
Favours the direction of the side which has the most moles of gas.
Describe what effect removing a product has on equilibrium.
Favours the direction of the reaction that makes the product.
Describe what effect adding a reactant has on equilibrium
Favours the direction of the reaction that uses up the reactant to make the product.
What is le chateliers principle ?
if a dynamic equilibrium is disturbed by changing the conditions the system will shift its equilibrium position to counteract that change and restore a new equilibrium
Do equilibrium happen in open or closed systems ?
Closed systems
What is released in closed systems?
Energy
What is released in open systems?
Mass and energy
