a. Sketch a graph to show the Boltzmann distribution of molecular energies. Label the axes.

b. What is meant by activation energy?

c. Shade an area on the graph to show the number of molecules capable of reacting.

d. Mark on your graph a possible activation energy for the same reaction in the presence of a catalyst.

e. Shade an area on the graph to show the additional number of molecules capable of reacting because of the presence of a catalyst.

f. Draw a second curve on your graph to show the Boltzmann distribution of molecular energies at a slightly higher temperature.