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Chemistry, The reaction between sodium

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Introduction

Chemistry, The reaction between sodium Aim - The aim of this experiment was to find out the rate of a reaction at different temperatures. - We also wanted to find out the rate of the reaction at a different temperature in bigger or smaller surface areas. Prediction - My prediction is, by increasing the temperature a reaction will happen more quickly. The more heat - The Faster reaction and more collision. The lower the temperature - The slower the reaction and less collision. Time and Seconds Temp 1 2 3 Average 1/Time Cold 9(c 1.19 1.30 1.21 1.23 1/1.23=0.81300813 Room 22(c 5 4545 1.02 1.11 1.08 1.07 1/1.07=0.934579439 Warm 45(c 0.47 0.32 0.49 0.49 1/0.49=2.040816327 Hot 90(c 0.31 0.37 0.33 0.33 1/0.33=3.03030303 My Understanding Reactions occur at different speeds in different temperatures. ...read more.

Middle

The Stop watch was used for timing how long it took for the reaction to happen. Method - For this experiment I first set up the apparatus with the apparatus that is shown above. - I then poured 5lm of HCL into a conical flask. - I then measured 10 ml of sodium thiosulphate, - I then I added it to the 5 ml of HCL. - I recorded how long it took for the reaction to take place, which was how long it took for the X to disappear. - With the times that I recorded from the experiment, I calculated an average. ...read more.

Conclusion

- This happened because the particles move more quickely and collide more often as stated in the collision theory. - The experiment proved my prediction correct which was based upon the collision theory. - My prediction was true as the higher the temperatures the faster the reaction. Evaluation - My results are reliable because I made it a fair test. - I used the same method each time. - I also used an average which meant there was no anomalous data. - Also, I proved my prediction which was based on scientific readings. Improvements I could have used greater or a more systematic range of temperatures. For example. 0, 10, 20, 30 etc. Extension To extend my experiment I could have investigated different factors. for example different surface areas and concentrations etc. ?? ?? ?? ?? ...read more.

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