In chemistry, graphs can be used to follow the course of a reaction. A graph can tell us many things about a reaction. The graph below shows two similar reactions. The magenta line has a steeper ...

The results recorded here show that the reaction had finished by four minutes, as no more gas was produced after that. The mean rate of reaction = 50 ÷ 4 = 12.5 cm 3 /min However, the rate decreased ...