Investigating the Rate of Reaction Between Marble Chips And HCL Safety- must always wear safety glasses and we should be very careful not to drop any acid. Fair test- we must make sure that we use the same size, amount and roughly the same mass of chips, this is because we want to keep the chips roughly the same all the way through the experiment so that it will be a fair test and the results we be in relation to each other, otherwise the results will be completely different to what we will expect and it will ruin the experiment. We must also take our readings at the same intervals throughout the experiment i.e I will take a reading every fifteen seconds for all of my experiments. I predict that the more concentrated the acid the quicker the reaction will take place, because the more concentrated the acid is then it will make the chips react faster and more hydrogen will be given off in a quicker time. The smaller the stones are, the even quicker the reaction will happen, this is because the acid has a smaller surface area to act upon. Equipment- We will need a boiling tube, calcium carbonate chips, hydrochloric acid, water, a stop watch, a gas syringe and a bung on the top of the boiling tube with a delivery tube connected to the gas syringe. I will also need a stand and a clamp to hold…
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