To Study the effect of raising temperature on a reaction.

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Changes of a Reaction

To Study the effect of raising temperature on a reaction.

I predict that if I heat a reaction it will react quicker because molecules move faster at a certain temperature but if the temperature gets too high then the shape of the molecule will change and be unable to break down the other substance.

Plan

I will do eight different experiments but the only thing I will change is the temperature.

I will use 50cm3 of Hypo and 5cm3 of acid and I will not change them amounts of liquids throughout the eight experiments. I will heat the hypo and the acid to the same temperature and mix them together using the black dot method to time my reaction which is a black dot on a piece of paper and when the liquid goes milky then the dot will be no longer visible through the liquid. The temperatures I will be using are 20, 25, 30, 35, 40 and 45 degrees Celsius. I will know when the reaction has taken place when the solution turns milky and the black dot is no longer visible.

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Method

Firstly, I measured 50cm of Hypo using the measuring Cylinder and then put into a conical flask. The appropriate temperature was checked using the thermometer. It was at this point where I carried out the various temperatures.

 At the appropriate temperature, 5cm acid was measured using the measuring cylinders and then added to the flask containing the hypo. I now placed the flask over the paper, which had a black dot on it that I had drawn earlier.

The stop clock was started immediately to make results more accurate and the time in seconds for the cross to ...

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