Chemistry Practical: Investigating the Effect of Concentration on Reaction Rate

This video discusses a required practical experiment in chemistry where the objective is to investigate how increasing the concentration of a reactant affects the rate of the reaction. The hypothesis is that increased concentration leads to an increase in the rate of the reaction due to the collision theory. The experiment involves using calcium carbonate and hydrochloric acid, where the concentration of the acid is changed as the independent variable. The dependent variable is the volume of carbon dioxide collected in a minute, and the controlled variables are the mass and size of calcium carbonate, volume and temperature of acid. Equipment required for the experiment is a conical flask connected to a gas syringe via a delivery tube. The results are calculated and plotted on a graph, which indicates that the rate of reaction is proportional to the concentration of the acid.