The table shows data for the catalyzed decomposition of hydrogen peroxide solution into oxygen gas and water.
Time / min
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Volume of oxygen gas / cm 3
0
18
35
48
58
66
72
78
81
84
87
Hydrogen peroxide concentration / mol dm -3
0.159
0.129
0.101
0.080
0.063
0.050
0.040
0.030
0.025
0.020
0.018
- Plot a line graph of the concentration of hydrogen peroxide solution (y-axis) against time (x-axis).
- Use the graph to determine the instantaneous rate of the reaction at the following concentrations of hydrogen peroxide: 0.16 mol dm-3, 0.12 mol dm-3, 0.08 mol dm-3, 0.04 mol dm-3.
- Plot a line graph (with a line of best fit) of rate (y-axis) against the concentration of hydrogen peroxide solution (x-axis).
- Evaluate the accuracy of this approach to establishing the relationship between concentration and rate.