MEDIUM
AS and A Level
IMPORTANT
Earn 100
Explain how a catalyst increases the rate of reaction in terms of activation energy and the distribution of molecular energies in a sample of reactants.
Important Questions on Rates of Reaction
HARD
AS and A Level
IMPORTANT
Draw a reaction profile diagram to show a typical uncatalysed reaction and the catalysed version of the reaction. On your diagram show the activation energy for the catalysed and uncatalysed reactions.
HARD
AS and A Level
IMPORTANT
Explain why gases react together faster at higher temperature.
HARD
AS and A Level
IMPORTANT
Explain why reactants in the solution react faster at higher temperature.
HARD
AS and A Level
IMPORTANT
Explain why finely divided solids reacts more quickly than solid lumps.
HARD
AS and A Level
IMPORTANT
Explain why raising the temperature increases the rate of reaction.
HARD
AS and A Level
IMPORTANT
Sketch a graph to show the boltzmann distribution of molecular energies. Label the axes.
HARD
AS and A Level
IMPORTANT
Define activation energy.
HARD
AS and A Level
IMPORTANT
Shade an area on the graph to show the number of molecules capable of reacting.
