of Constants: (To be completed before your lab period) Compounds Structure Imidazole 4-nitrobenzaldehyde mandelic acid trans-cinnamic acid D-(+)-gluconic acid 8-lactone (Draw the skeletal structure of each compound, including lone pairs) -N H Melting Point (°C) 88-91 103-106 119-121 132 135 154 - 162 Approximate Mel-Temp Setting (2 significant figures) 2.8

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Melting Point Analysis Experiment
Objective:
The goal of this experiment is to determine the identity of an unknown organic compound based
on melting point analysis. The melting point range of the unknown compound will be
determined using a Mel-Temp apparatus. The identity of the compound will be determined by
comparing the measured melting point range to the literature melting point ranges of five
different compounds: imidazole, 4-nitrobenzaldehyde, mandelic acid, trans-cinnamic acid, and
D-(+)-gluconic acid 8-lactone.
Table of Constants: (To be completed before your lab period)
Compounds
Structure
Imidazole
4-nitrobenzaldehyde
mandelic acid
trans-cinnamic acid
D-(+)-gluconic acid
8-lactone
(Draw the skeletal structure of each
compound, including lone pairs)
HN
-N
Melting
Point (°C)
88 - 91
103-106
119-121
132 - 135
1154 - 162
Approximate
Mel-Temp
Setting (2
significant figures)
2.8
Transcribed Image Text:Melting Point Analysis Experiment Objective: The goal of this experiment is to determine the identity of an unknown organic compound based on melting point analysis. The melting point range of the unknown compound will be determined using a Mel-Temp apparatus. The identity of the compound will be determined by comparing the measured melting point range to the literature melting point ranges of five different compounds: imidazole, 4-nitrobenzaldehyde, mandelic acid, trans-cinnamic acid, and D-(+)-gluconic acid 8-lactone. Table of Constants: (To be completed before your lab period) Compounds Structure Imidazole 4-nitrobenzaldehyde mandelic acid trans-cinnamic acid D-(+)-gluconic acid 8-lactone (Draw the skeletal structure of each compound, including lone pairs) HN -N Melting Point (°C) 88 - 91 103-106 119-121 132 - 135 1154 - 162 Approximate Mel-Temp Setting (2 significant figures) 2.8
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