Chem Lab. Identyfing organic solid
Post-Lab Report for Experiment 2:
Cooperative Identification of an organic Solid
October 6, 2013
Introduction:
This experiment was focused on the cooperative identification of organic compound by its chemical properties such as: slow melting point, mixed melting point, Rf values in TLC experiment, IR spectrum analysis, and H NMR spectra. Such data can provide the the identity of functional groups and the identity of the compound itself.
In this experiment students were taking the slow melting point of their unknown compound. The tabulated list of all melting points of all students in the lab was created what was very helpful in finding a partner with the same organic solid based on the melting point data. Then with all possible matches students performed mixed melting point and the TLC experiment to find if they have the same retention factor (Rf). At the end of the lab students recorded the infrared spectrum (IR) of an organic compound by using FT-IR spectrometer. After the lab period a H NMR spectrum was given by TA.
The data that was collected during the lab helped to provide the information for the questions in the lab manual: IR and NMR spectrometer measurements to identify compound and the number of protons and signals, mixed melting points and TLC Rf values in order to find possible matches with other students, melting point of own compound to make the list of tabulated MP of all students.
Data:
1) Melting point of compound given # 444: 129 °C is the fast melting point, and 135 °C slow melting point.
The matching:
2) Mixed Melting points of other students that have approximately the same melting points.
a) Mixed melting point of # 401 and # 444 = 130-132 °C
b) Mixed melting point of # 401 and # 275 = 132 °C
c) Mixed melting point of # 401 and # 351 = 124-133 °C
d) Mixed melting point of # 275 and # 351 = 121-124 °C
Since the mixed melting points were performed between 401 and 275, 401
Cooperative Identification of an organic Solid
October 6, 2013
Introduction:
This experiment was focused on the cooperative identification of organic compound by its chemical properties such as: slow melting point, mixed melting point, Rf values in TLC experiment, IR spectrum analysis, and H NMR spectra. Such data can provide the the identity of functional groups and the identity of the compound itself.
In this experiment students were taking the slow melting point of their unknown compound. The tabulated list of all melting points of all students in the lab was created what was very helpful in finding a partner with the same organic solid based on the melting point data. Then with all possible matches students performed mixed melting point and the TLC experiment to find if they have the same retention factor (Rf). At the end of the lab students recorded the infrared spectrum (IR) of an organic compound by using FT-IR spectrometer. After the lab period a H NMR spectrum was given by TA.
The data that was collected during the lab helped to provide the information for the questions in the lab manual: IR and NMR spectrometer measurements to identify compound and the number of protons and signals, mixed melting points and TLC Rf values in order to find possible matches with other students, melting point of own compound to make the list of tabulated MP of all students.
Data:
1) Melting point of compound given # 444: 129 °C is the fast melting point, and 135 °C slow melting point.
The matching:
2) Mixed Melting points of other students that have approximately the same melting points.
a) Mixed melting point of # 401 and # 444 = 130-132 °C
b) Mixed melting point of # 401 and # 275 = 132 °C
c) Mixed melting point of # 401 and # 351 = 124-133 °C
d) Mixed melting point of # 275 and # 351 = 121-124 °C
Since the mixed melting points were performed between 401 and 275, 401