Experiment 4.pdf - Experiment 4 Enthalpy of Chemical...

Experiment 4
Enthalpy of Chemical Reactions
1
Summer 2018 (revised Z. Baranova)
Student name: Alex Castro
TA name: Atlantis Frost
Day & time of the lab: Tuesday, 1:00 PM
The lab report packet for this experiment should consist of the following:
1. (20 pts) PRE-lab notebook pages
2. (10 pts) IN-lab notebook pages
2.1. Experimental procedure
2.2. Recorded experimental values and the file name (as saved on your USB drive)
2.3. Observations if any were noted
3. (10 pts) POST-lab notebook pages
3.1. Sample calculation for every type of math operation
4. (60 pts) The WORKSHEET
4.1. Tables with captions
4.2. Figures of graphs with captions in the right positions
4.3. Complete (full sentence) answers to the discussion questions (DQ; may be listed by DQ#s )
Complete this worksheet, print, and attach to your lab report packet. Feel free to adjust space
in this document as needed. The tables provided here are only an example of these may look like, feel
free to replace the entire tables with your own creations using Excel, etc.
Online submission of the worksheet document is not necessary.

Enthalpy of Chemical Reactions
2
Summer 2018 (revised Z. Baranova)
PRE-LAB notebook pages – 20 pts – point breakdown
1. (2 pts) Purpose
2. (3 pts) Objectives
3. (2 pts) List of compounds (reactants, reagents, solvents, etc. with the correct
concentrations )
4. (2 pts) List of equipment
5. (3 pts) Chemical and physical hazards
6. (5 pts) Complete and properly balanced chemical equations for all the chemical
reactions that will be performed during this experiment (5 total)
7. (3 pts) Experimental OUTLINE
WORKSHEET – 60 pts (DATA ANALYSIS, DQs, Figures, Tables)
Figures (five total) (2 pts/each)
DATA ANALYSIS – the results from this detailed data analysis will provide you with the some
of the answers to the Discussion Questions.
PART B: The Reaction of Hydrochloric Acid and Ammonium Hydroxide
1. Use Logger Pro 3.14 (or Excel) to open the .qmbl file saved on your USB drive from Part B. To
generate a new graph for each reaction :
a. Select “Insert” from the task bar in the top left, then select “Graph”.
b. You can change the name (and corresponding data of) an axis by simply left -clicking on it
and selecting the desired option from the drop-down menu. To toggle between the
temperature readings from each different reaction, click on the y-axis title (Temperature)
to access the drop-down menu, then select “More” to see options for each individual run.
c. Ensure that each graph (Figures 1-3) plots Time on the x-axis and Temperature on the
y-axis.
d. Select “Analyze” and “Statistics” to add a statistics legend to each graph.
e. Add an appropriate title to each graph by right -clicking on the graph and selecting “Graph
Options”.
f. Copy and paste all three graphs here:

Enthalpy of Chemical Reactions
3
Summer 2018 (revised Z. Baranova)
Figure 1: Reaction recording change in temperature over time for the reaction of hydrochloric acid
and sodium hydroxide

Enthalpy of Chemical Reactions
4
Summer 2018 (revised Z. Baranova)
Figure 2: Reaction recording change in temperature over time for the reaction of Sodium Hydroxide
and Ammonium Chloride