What factors affect the rate of the decomposition of hydrogen peroxide with a fixed mass of catalyst?
” P LANNING Aim: Our aim is to detect which factors affect the rate of the decomposition of hydrogen peroxide with a fixed mass of catalyst. A catalyst is a substance, which alters the speed, or rate of a chemical reaction but is chemically unchanged at the end of the reaction. The two factors that we can change are the temperature and the concentration. We chose to vary the concentration of hydrogen peroxide. The catalyst to speed up the reaction without affecting the result will be manganese oxide. Prediction: I predict that the higher the concentration of hydrogen peroxide, the faster hydrogen peroxide and manganese oxide decomposes. Therefore the lower the concentration of …
P LANNING Aim: Our aim is to detect which factors affect the rate of the decomposition of hydrogen peroxide with a fixed mass of catalyst. A catalyst is a substance, which alters the speed, or rate of a chemical reaction but is chemically unchanged at the end of the reaction. The two factors that we can change are the temperature and the concentration. We chose to vary the concentration of hydrogen peroxide. The catalyst to speed up the reaction without affecting the result will be manganese oxide. Prediction: I predict that the higher the concentration of hydrogen peroxide, the faster hydrogen peroxide and manganese oxide decomposes. Therefore the lower the concentration of hydrogen peroxide, the lower the rate that hydrogen peroxide and manganese oxide decompose. The prediction we have just made has been based on the collision theory-‘Chemical reactions occur when particles of the reactant collide with enough energy’ (John Holman page 225). If the concentration of ….