108 or 112, monitoring the computer-assisted data collection. Exchange duties between runs so that each of you participates in all parts of the experiment. Precautions You will be working with acids and bases this week, so you will need to take the usual precautions when handling these corrosive materials. Your TA will explain the procedure for handling a spill of the acid or base either on the desktop or on your skin or clothing. For the best results, you should try to see that the position of thermometer is such that the solution rises to exactly the same level on the thermometer stem each time.
Every experiment has certain errors associated with the measurements.
Think about what sources of error enter into your determination of the heats of reaction in this week's lab, and write a paragraph describing those errors. You should, when possible, predict the way in which the errors influence the calculated heats of reaction. For example, if you stirred your reaction mixture so vigorously that you slopped solution onto the lab bench, then you might predict that the temperature difference you measured was too small and thus the calculated heat of reaction was too low.