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The effect of concentration on the rate of reaction between hydrochloric acid and magnesium ribbon

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Introduction

The effect of concentration on the rate of reaction between hydrochloric acid and magnesium ribbon Plan The rate of reaction can be affected by these factors, * Temperature * Concentration * Size of surface area * And by adding a catalyst I have chosen to investigate the effect of concentration. This will be done be investigated by diluting acid and timing how long it takes the same amount of magnesium ribbon to dissolve. ...read more.

Middle

I have 60 cm of ribbon to use; each time the experiment is done I will use 4cm. This leaves 12cm to check any anomalous results. Also to keep a fair test the temperature must stay the same, the fore the experiments will all be carried out at room temperature. The apparatus I intend to use are as follows; Stop Clock, 50ml measuring cylinder and a 250ml-measuring beaker. Prediction I predict that the less concentrated the acid, the slower the rate of reaction. ...read more.

Conclusion

The clock stop was stopped when the magnesium ribbon had fully dissolved; the time it took for the magnesium ribbon to dissolve was recorded in the table below. The experiment was repeated again and an average for the two times was worked out. The experiment was then repeated again, but this time diluting the acid with 5ml of water. Results Amount of HCl (ml) Amount of water (ml) Time 1 (sec) Time 2 (sec) Average time (sec) 50 0 14 12 13 45 5 18 15 16.5 40 10 19 19 19 35 15 24 25 24.5 30 20 30 29 29.5 25 25 47 55 51 ...read more.

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