Deduce the volume of oxygen gas evolved when the reaction has finished.
Deduce the volume of oxygen gas obtained after 50 seconds from the start of the reaction.
Draw a line on the grid to show how the oxygen volume varies with time when hydrogen peroxide of a higher concentration is used.
Describe how each of the following affects the rate at which hydrogen peroxide decomposes: • The reaction is carried out at a lower temperature, with all other conditions unchanged. • The reaction is carried out without an enzyme, with all other conditions unchanged.
Put the three oxides in order of how well they catalyse the reaction. Put the best catalyst first.
Describe how the rate of decomposition of hydrogen peroxide changes when large pieces of catalyst are used rather than powdered catalyst. Every other condition stays the same.