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My prediction is the higher the concentration of HCL the quicker the Sodiumthiosulphate will react with it.I think this because there are more particles colliding with each other

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Introduction

Rates of Reaction Aim: Our aim is to test how different concentration's of HCL (Hydrochloric acid) react with a standard concentration of Sodiumthiosulphate. Prediction: My prediction is the higher the concentration of HCL the quicker the Sodiumthiosulphate will react with it. I think this because there are more particles colliding with each other because of the higher concentration. Safety: Our safety techniques are: * Tie long hair back * Tuck ties in * Wear goggles * Tuck stools under the table * Put bags under table * Clean equipment after use * Clean table * Stand up Apparatus: Our apparatus that we used are: * Conical flask * Hydrochloric acid * Sodiumthiosulphate * Stop clock * Paper with X in the middle * Pipette * Beaker * ...read more.

Middle

Hcl Volume (ml) Sodiumthiosulphate (MOL) Volume (ml) Time (s) 2 25 0.08 25 49.41 1 25 0.08 25 52.76 0.5 25 0.08 25 70.92 0.25 25 0.08 25 83.42 0.125 25 0.08 25 89.37 Test 2 Hcl (MOL) Hcl Volume (ml) Sodiumthiosulphate (MOL) Volume (ml) Time (s) 2 25 0.08 25 42.87 1 25 0.08 25 55.99 0.5 25 0.08 25 62.37 0.25 25 0.08 25 79.65 0.125 25 0.08 25 85.59 Average table Hcl (MOL) Hcl Volume (ml) Sodiumthiosulphate (MOL) Volume (ml) Time (s) Time (s) Average time (s) 2 25 0.08 25 42.87 49.41 46.14 1 25 0.08 25 55.99 52.76 54.38 0.5 25 0.08 25 62.37 70.92 66.65 0.25 25 0.08 25 79.65 83.42 81.54 0.125 25 0.08 25 85.59 89.37 87.48 Conclusion: When I ...read more.

Conclusion

the first time and 89.37 (s) the second time, so that means that my prediction was right because I said the higher the concentration of Hcl the faster the reaction time will be. Evaluation: I think I have done the experiment well enough that I could write up a good conclusion because I knew what I had to write up because my prediction matched my results. I done the test as well as I could and I tried to make it fair as I could by making sure I used separate measuring tubes for each chemical and I done other things to make it fair. If I could do the test again I would try and do it as fairly and I would take my time so I would get more accurate results and I would repeat it three times. ...read more.

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