Set up five water baths at temperature of 10,20,30,40 and 60
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Step 2:
Clamp a boiling tube onto a clamp stand in front of a white tile/sheet of white paper
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Step 3:
Pour 10cm3 of 1M hydrochloric acid solution into the boiling tube
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Step 4:
Place the boiling tube into the water bath and leave it to equilibrate to the temperature of the water
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Step 5:
Place an agar cylinder containing sodium hydroxide solution and phenolphthalein indicator into the boiling tube, making sure the agar cylinder is covered with hydrochloric acid and start the stopwatch/stopclock immediatel
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Step 6:
Time how long it takes for the pink colour to disappear
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Step 7:
Repeat the experiment to get three results at this temperature
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Step 8:
Repeat steps 1-5 for each temperature, using a clean boiling tube each time
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Other cards in this set
Card 2
Front
Step 2:
Back
Clamp a boiling tube onto a clamp stand in front of a white tile/sheet of white paper
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