Question

SECTION TWO: ANSWER ALL THE FOLLOWING QUESTIONS

1. Copper (II) oxide catalysis the decomposition of hydrogen peroxide.
0.5 g of the oxide was added to a flask containing 100 cm³ of
hydrogen peroxide solution. A gas was released. It was collected,
and its volume noted every 10 seconds. This table shows the results:
0 10 20 30 40 50 60 70 80 90
Times/s
57 58 58 58
volume/cm³
0
18 30
40 48
53
a. What is a catalyst?
b. Write a balanced equation for the decomposition of hydrogen
peroxide.
c.
Name the gas that is formed.
d. Describe how rate changes during the reaction.
e. What mass of copper (II) oxide would be left in the flask at the
end of the reaction?
f. Name one other substance that catalysis this decomposition.
9. Draw a graph using the table above.
the questios that follows:

Answer 1

Answer: a, b, a, c, a, d, a, b, a

Step-by-step explanation: