When the concentration of hydrogen peroxide increased, what happened to the time was it decreased, because the rate of reaction got faster.
This happened because there were more particles of hydrogen peroxide to collide with the catalyst, which meant they had more energy, and speeded up the rate of reaction. This states that my prediction was correct.
There were one or two anomalous readings. You can see this quite clearly on the graph. The unusual readings were for the reaction with 15ml and 20ml of hydrogen peroxide. This may be because the gas managed to escape causing the reaction to slow down.
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