LIST:
1. Notebook: pre-lab report, all
results from lab notebook, all work done in the lab written in lab notebook
BEFORE THE EXPERIMENT:
Read CAREFULLY EXPERIMENT 6 and related material from the textbook. In this
experiment we measure heats of combustion using bomb calorimeter, we will use
benzoic acid as standard. You will need to learn how to use bomb calorimeter and
how to prepare sample pallets and connect them with wire.
OBSERVE ALL SAFETY RULES IN THE LAB! Identify the pressure limits for
filling the bomb with oxygen and other parameters, learn how to start the
combustion using electrical wire, and how to very precisely measure temperature.
WRITE DOWN DETAILED LIST OF STEPS /Procedure FOR YOUR EXPERIMENT.
You will also read and become
familiar with the Thermodynamical observables and principles as well as with the basic physico -chemical principles on
which the models for heat of combustion is based (see textbooks and
manuals. You should calculate all theoretical and experimental values using the expressions in the
book . The needed data should also be available in the textbbok, PChem book or
in the literature.
2. Mathematica (or similar ): all
calculations and uncertainty calculations, with the data
* You will write all
needed expressions - see textbook and this page to find what you need to
calculate and model in Mathematica - and do the calculations before submission
of results to this webpage. In the Mathematica program assign the values to the
standard physical constants first (example: R etc). Make sure that all
input values are in real number format ("with decimal point"). USE THE CORRECT
and CONSISTENT SET of UNITS The dimensional equations could be calculated the
same way as numerical-but be careful.
Use Mathematica for the calculation of the propagation of uncertainties
expressions. You can practice the model calculations and uncertainty
calculation using available data from first sets of experiments. Make a Mathematica example file
at the beginning of experiment to see how to do the
modeling and calculations . You can use Excel in this case too.
3.This web submission
Fill in
the blank fields below with your measured data, results of (Mathematica) modeling, simulations and calculations. After
you have re-checked that all of your values are entered correctly, print
out a hard copy of confirmation page for your record - all is to be submitted with your pre-lab
and the copies of lab-notebook sheets. You
are allowed to submit data more than once-if you make entry error; so make sure your
last entries are correct.
Then click on the submit button.
4. Report in .doc format (abstract,
intro, results&discussion, conclusions, references)
You can use the calculations from Mathematica
and cut-paste copy into report. Make sure that each calculation step is clearly
presented.
*You can attach/submitt by e-mail with
CHEM3493-experiment#-YOUR NAME all on that list, except the copies from
notebook. Also ,when needed, computer generated
work (acquired data in files, images, including all instrument-software, LabView, Mathematica, Excel files, Gaussian03 or PeakFit
files etc. ).
Additional post-experiment work (experiment #
6) will include QM software based (Gaussian)
modeling of the thermodynamic properties of these molecules.
You will read about these calculations and will be shown how
to perform the calculations on the GridChem or/and LSU parallel computer system
Use Gaussian 03 example file for the additional report.
Additional post-experiment work (experiment #
5) will include instrumentation study and development.