LAB 3 Report

Topics: Solubility, Gas, Temperature Pages: 4 (737 words) Published: July 27, 2015


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EXPERIMENT: Solubility and Solubility Curves

Fill in all the information in boxes highlighted in yellow !

Use rules of significant figures; include units with each result.

Data Table 1: Experimental Data
Experiment Stage
Total Mass of
NH4Cl (g)
Volume of Water
(mL)
Crystallization
Temperature (°C)
Convert to:
g NH4Cl
100 mL H2O
1
2g
5.0
44°C
40g NH4Cl
2
2.2g
5.0
50°C
44g NH4Cl
3
2.4g
5.0
57°C
48g NH4Cl
4
2.6g
5.0
61°C
52g NH4Cl
5
2.8g
5.0
66°C
56g NH4Cl

Data Table 2: Experiment Results
Solubility of NH4Cl (g/100 mL H20)
Crystallization Temperature (°C)
40g NH4Cl
44°C
44g NH4Cl
50°C
48g NH4Cl
57°C
52g NH4Cl
61°C
56g NH4Cl
66°C

Data Table 3: Solubility Results
Compound Mixture
Soluble or Insoluble?
Distilled H2O + Na2SO4
soluble
Corn Oil + Na2SO4
insoluble
Canola Oil + Na2SO4
insoluble
Compound Mixture
Miscible or Immiscible?
Distilled H2O + Corn Oil
Immiscible
Distilled H2O + Canola Oil
Immiscible
Canola Oil + Corn Oil
miscible

Post-Laboratory Questions

Show work whenever feasible! Use rules of significant figures; include units with each result.

A. Create a solubility curve for NH4Cl by plotting g NH4Cl/100 mL H20 on the y-axis, and crystallization temperature on the x-axis. Make sure to label each axis. On the same graph as the solubility curve for NH4Cl, add the solubility curve for NaCl using the data provided in Data Table 3.

If you hand-draw your graph, scan or photograph it and insert it below. If you are familiar with Microsoft Excel, use the Excel template available under “Additional Information” on Blackboard: type in the values for solubility of NH4Cl and temperatures from Data Table 2 into the left-hand side table in the Excel spreadsheet, which will automatically fill in the data into the chart below it. Then click on the chart, copy it, and paste it below.

I couldn’t figure out how to graph...
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