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 OUTLINEWORKSHEET – 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 someof the answers to the Discussion Questions.PART B: The Reaction of Hydrochloric Acid and Ammonium Hydroxide1.Use Logger Pro 3.14 (or Excel) to open the .qmbl file saved on your USB drive from Part B. Togeneratea 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 simplyleft-clicking on itand selecting the desired option from the drop-down menu. To toggle between thetemperature 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 thateach graph (Figures 1-3)plots Time on the x-axis and Temperature on they-axis.d.Select “Analyze” and “Statistics” to add a statistics legend to each graph.e.Add an appropriate title to each graph byright-clicking on the graph and selecting “GraphOptions”.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
You've reached the end of your free preview.
Want to read all 12 pages?