Page 113 - Science Coursebook
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8.4 Temperature and the rate of reaction
Activity 8.4B
The effect of temperature on the rate of reaction – preliminary work
SE The next step is to do some preliminary work to decide which temperatures you
will use. To change the temperature of the sodium thiosulfate solution, warm it in a
suitable water bath before adding the acid. Make sure there is a stopper in the tube
while it is warming.
Discuss in your group how you will do this preliminary work. When you have made
your plan discuss it with your teacher.
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40
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20 20
10 10 10 10
0 0
How large a change in
temperature is needed Will we start the
to give a reaction time temperatures at
difference we can room temperature?
measure?
How big a range Will we increase the
of temperatures temperature by 5 °C
will we use? or 10 °C or 20 °C?
Questions
A2 Describe what you have decided to do as your preliminary work.
A3 How will this help you with your final investigation?
A4 Write the outline plan for your investigation, including a results table.
8 Rates of reaction 111
