CHEM 241L George Mason University Organic Chemistry & Melting Point Lab Report
Question Description
I’m working on a chemistry report and need a sample draft to help me understand better.
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MELTING POINT
PURPOSE
(Specifically state the purpose of the experiment and evaluation methods in a few sentences.)
Example:
The purpose of this experiment is to separate hexane and toluene from a mixture by distillation using Hickman Still apparatus. After isolation of each component, gas chromatography is used to evaluate the efficiency of the Hickman distillation technique performed.
PROCEDURE
DATA/RESULTS
- MELTING POINT RANGES
- MELTING POINT DIAGRAM (plot the lowest temperature of each melting point range)
Compound |
Melting Point Range (?C) |
Benzoic acid (100%) |
121 122 |
Maleic acid (100%) |
134 135 |
Benzoic acid: Maleic acid (75%:25%) |
103 116 |
Benzoic acid: Maleic acid (50%:50%) |
102 119 |
Benzoic acid: Maleic acid (25%:75%) |
111 120 |
CONCLUSION
(This is the section in which you interpret the data obtained in the previous section. It demonstrates that you understand and can interpret the data you have collected. Interpret the data obtained, observations, graphs, etc. and compare with literature sources where necessary. Relate the experimental results to the theory discussed in the introduction. This section also addresses the yield and purity of products and possible sources of error that may have influenced these results.)
Post-Lab Questions
- Define melting point of a substance.
- What is the purpose of melting point determination?
- What is the effect of a small amount of impurity on the melting point range of an organic compound?
- If the melting point of an organic compound is 2 ?C higher with a narrow melting range (< 1 ?C) than the literature value, how would you determine the purity of the compound? Is it pure or impure? Explain thoroughly for full credit.
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