equilibrium

Cards (9)

what is a catalyst
they are substances that speed up the rate of a chemical reaction without being used up / changed permanently
what do catalysts do
they provide an alternative reaction pathway with a lowered activation energy
they increase the rate of the forward and reverse reaction equally so there is no change in the equilibrium position
what is dynamic equilibrium
rate of the forward reaction is equal to the rate of the reverse reaction
it is a sealed system and the conc of reactants and products remain constant
pressure - what happens if we impose a high pressure
the reaction will lower the pressure and the equilibrium will move to the right as it has less moles of gas
pressure - what will happen if we impose a low pressure
the reaction will increase the pressure moving the equilibrium to the left where there is more moles of gas
conc change - what will happen if we impose a decrease in reactants 
the reaction will increase the reactants and the equilibrium will movee to the left to oppose us
conc change - what will happen if we increase reactants
the reaction will decrease reactants and move the equilibrium to the right to oppose us
temperature - what will happen if we impose a decrease in temperature
the reaction will increase temperature and the equilibrium will move to the right - to the exothermic side
temp - what will happen if we impose an increase in temp
the reaction will decrease temp and the equilibrium will move to the left - in the endothermic side

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