Notes
Experiment
You have learned the techniques you need to perform this determination during
your earlier labs. Consult those procedures and your results to help in planning
your experiments. Before you begin your experiments, you need to devise an
experimental plan and procedure for what you will do.
This is a two-week lab. You will come up with the plan during the first laboratory
session and start to carry out experiments. You will finish the experiments in the
second week and write up your conclusions.
Remember that all conclusions need to be supported by evidence! For
determining the identity of the salt make sure to rule out all other choices. For
determining the concentration of the salt make sure to make at least three
determinations so that you have a sense of the uncertainty in your
measurement.
Available Materials
In addition to what you have in your lab drawer, you will have all the lab
equipment from the first four labs available to you for this experiment. You do
not need to use and should not use all the equipment in the lab.
Data Collection
When collecting data, keep everything well organized and labeled. Think about
the experiments you will perform. What data will need to be recorded? Set up
tables for yourself to help in organizing your data.
Safety Considerations
Talk through your experimental approach with your laboratory instructor before
beginning to make sure you have appropriately accounted for safety. Check
safety considerations from previous labs to aid in developing your approach to
completing this lab safely.
Waste Disposal
Dispose of solid waste in the appropriately labeled solid waste container. Dispose
of liquid waste in the appropriately labeled liquid waste container.
43