(a(i))[2]
Show the data on the grid and draw a smooth best-fit curve.
(a(ii))[1]
The student thinks that one of the data points is anomalous. Circle the anomalous point on the graph.
(a(iii))[1]
Use your graph to deduce the correct percentage of ammonia for the point circled in a(ii).
(b)[1]
The student chooses to carry out the whole experiment again. Why is this a good idea?
(c)[1]
Suggest why a catalyst is included in the experiment.
(d)[1]
Because the reaction between nitrogen and ammonia is reversible, dynamic equilibrium is reached. Use your graph to suggest the time at which dynamic equilibrium is first attained.