The Decomposition of Hydrogen Peroxide
What factors vary the decomposition of Hydrogen Peroxide when a fixed
mass of catalyst is added to it?
[IMAGE]Hydrogen Peroxide Water + Oxygen
Manganese Oxide(catalyst)
Equipment
=========
Ø Burette
Ø Clamp
Ø A bowl of water
Ø Test tube with delivery tube
Plan- method
============
Ø Measure the catalyst and the H O .
Ø Then pour the catalyst into a test tube along with the H O and
attach the delivery tube.
Ø Start the stopwatch and record how long it takes the reaction to
take place and for all the water to empty out of the burette,
recording the results every 5 seconds.
Pre-Tests
We used our pre-test results to decide the amount of catalyst to use
in our actual experiment.
In our pre-test, the burette emptied in 14.85 seconds making it
impossible to record the results every 5 seconds because it was too
fast. Judging by our pre-tests, we decided that for our actual
experiment, we would use 0.1g of catalyst and 10cm of 10 vols. H2O .
We would achieve 10 vols. by using 5ml of 20 vols. and 5ml of water.
Prediction
I predict that the higher the concentration of H2O2 , the quicker the
reaction will take place. This is because of the collision theory.
There are more particles, therefore they collide more.
We will obtain a good range of results by doing the experiment twice
with each volume of Hydrogen Peroxide.
Obtain
Here are the results :
Time
(secs)
20 vols
20 vols
16 vols
16 vols
10 vols
10 vols
5 Vols
5 Vols
2
Vols
2
Vols
0
0
0
0
0
0
0
0
0
0
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