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I am investigating how the concentration of Hcl is affecting its reaction with sodium thiosulphate.

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Introduction

Aim: I am investigating how the concentration of Hcl is affecting its reaction with sodium thiosulphate. Prediction: As the concentration of Hcl increases the rate of reaction will increase. The rate of reaction will increase because there are more particles, and therefore more the chance of collision with the thiosulphate particles. Apparatus: * Measuring cylinder. ...read more.

Middle

The diagrams below show the effect of smaller and larger surface area on the reaction. These 2 diagrams below show what happens to particles when the temperature is increased. When the temperature is low they move slowly and when the temperature goes higher the particles will be moving faster and there will more collisions. Results: Concentration of Hcl (moles) ...read more.

Conclusion

* I do think that there was an error when the sodium thisulphate was added. * There might also have been an error when we started the stop clock. Evaluation: Going through all my work I feel that I have done nearly everything right in the experiment. The increase in temperature would cause the particles to gain more kinetic energy. If I were to do the investigation again I would: * Start the stop clock on time. * Be accurate on measuring the amount of reactants. Done by: Dipen Patel Science ...read more.

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