Question

Copper(II)oxide catalyses the decomposition of
hydrogen peroxide. 0.5g of the oxide was added to
a flask containing 100 cm of hydrogen peroxide
solution. A gas was released. It was collected and
its volume noted every 10 seconds. This table
shows the results:
Time/s :
0 10 20 30 40 50 60 70 80 90
Volume/cm :
0 18 30 40 48 53 57 58 58 58
1. Draw a diagram of suitable apparatus for this
experiment
2. Name the gas that is formed.
3. Write a balanced equation for the
decomposition of hydrogen peroxide.
4. Plot a graph of the volume of gas (vertical axis)
against time (horizontal axis).
5. Describe how the rate changes during the
reaction.​

Answer 1

Answer:

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