The table shows data for the catalyzed decomposition of hydrogen peroxide solution…

CHEMISTRY · Subjective · A Level · Chemistry · Rate equations · Rate equations

Problem

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.

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