Teacher manual for AP* and Advanced Chemistry labs. Has both the printed version and a flash drive with teacher tips, a PDF of teacher version and editable Word student version.
You have seen instructions on bottles of medicine instructing you, for example, to take “two capsules every four hours.” How do scientists come up with how often to take a medication? The answer is that they have done experiments that quantify how quickly the medicine is metabolized by the body. In other words, they develop equations that predict how long it will be before the concentration drops too low to have an effect on your symptoms. Such problems require scientists to make quantitative predictions, that is, to find an equation for the reaction.
How do you determine the speed of a reaction?
Students determine the order of a reaction and the effect of variables on the reaction rate.
The student is able to analyze concentration versus time data to determine the rate law for a zeroth-, first-, or second-order reaction.
This experiment may require software and an interface for data collection.