Effect of temperature on the rate of reaction

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Annem Rehman 10D

Effect of temperature on the rate of reaction

Aim: To investigate the effect of temperature on the speed of reaction between:

Sodium thiosulphate        25ml

Hydrochloric acid                5ml

Sodium thiosulphate  + Hydrochloric acid → Sodium chloride + Sulphur dioxide + Sulphur + Water

Apparatus:

  • Beaker
  • Stopwatch
  • Thermometer
  • 25ml of Sodium thiosulphate
  • 5ml of Hydrochloric acid
  • Water bath

Safety:  Wear goggles at all times just in case a chemical splashes into your eye.

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Method: 

Measure the Sodium thiosulphate and pour it into the beaker. Place the beaker into the water bath and wait until it reaches the temperature you are starting the experiment with. Measure the Hydrochloric acid and take the beaker out of the water bath. Pour the acid into the beaker. As soon as you do this, start the stopwatch. Record how long the reaction takes. Once the ‘X’ that is marked underneath the beaker is not visible, the reaction has been completed.

Repeat this for the temperatures 30◦c, 40◦c, 50◦c and 60◦c. Write down your results in a ...

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