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Rates of reaction

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Question 32

Celery pieces contain the enzyme catalase, which breaks down hydrogen peroxide into water and oxygen.

An experiment was set up where celery extract was added to a boiling tube containing hydrogen peroxide solution, and the gas produced was collected.

A diagram showing a boiling tube containing hydrogen peroxide solution and celery extract, connected via a delivery tube to a gas syringe to collect the oxygen gas produced.

The graph below shows the volume of oxygen gas collected over the course of the reaction both with and without celery extract.

A line graph with two curves. The vertical y-axis is labeled 'Volume of oxygen / cm³' with a scale from 0 to 50. The horizontal x-axis scale goes from 0 to 180, but has a missing label. The curve representing 'With celery extract' rises steeply from the origin and levels off at 45 cm³. The curve representing 'Without celery extract' remains flat at 0 cm³ on the horizontal axis.

Complete the graph by providing the missing label for the horizontal axis.

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Rates of reaction Questions

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