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Kimberley Beattie Chemistry coursework Aim- To find out how the concentration of hydrochloric acid affects the rate of its reaction with limestone (calcium carbonate) chips. Prediction- I think that a higher concentration of acid will give a faster rate of reaction. I think that this is because the higher concentration has more particles and therefore there is a higher chance of a collision between the particles in the hydrochloric acid and the limestone chips, as the acid and the chips are reacting, gas is given off. If the reaction happens faster then more gas will be given off in less time. I also think that the reverse of this is also true. The lower concentration of acid has fewer particles and therefore a lower chance of successful collisions between the particles, which results in less gas being given off. Apparatus- For my experiment, I will need to use the following equipment- * Safety goggles, * Clamp, * Clamp stand, * Gas...

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