Aims and Objectives : For this experiment, I aim to consider how much the concentration of hydrochloric acid affects the rate of reaction between marble chips and hydrochloric acid, by measuring the amount of carbon dioxide gas produced in a certain duration of time. Apparatus: Distilled water Stop clock correct to 0.01 seconds Boiling tubes Scales correct to 0.01g 10 ml test- tubes 2 MOLS Hydrochloric acid Glass gas syringe correct to 0.2ml Delivery tube and bunge Clamp stand Measuring cylinder correct to 0.5 ml...
stopclock as soon as the bunge is replaced, and the time is stopped when the gas syringe has filled up with 50cm3 of gas. I would predict that the general trend would stay the same, that the rate of reaction will increase with the concentration, and that this is directly proportional, but the graph will be much steeper, and there will be a much greater change in rate for each 0.2 M/ dm3 interval in readings, as the gradient on the graph will be greatly increased. I predict that the graph will look like this :