Radical Chlorination of 1-Chlorobutane
The purpose of the lab is to form 4 different dichlorobutanes by reacting chlorine radicals with 1-chlorobutane. This is then analyzed by gas chromatography to determine the experimental abundance of each isomer. Results: 1,1-dichlorobutane had an experimental abundance of 5.9%, 1,2-dichlorobutane had an experimental abundance of 21.1%, 1,3-dichlorobutane had an experimental abundance of 48.7%, 1,4-dichlorobutane had an experimental abundance of 24.3%. Procedure:
Williamson and Masters, Pages 330-331.
| Boiling Point (°C)
| Density (g/mL)
The greater the boiling point, the greater the retention time. The peaks are ordered as 1-chlorobutane first, then 1,1-dichlorobutane, 1,2-dichlorobutane, 1,3-dichlorobutane, and 1,4-dichlorobutane last. The 1-chlorobutane is first because it has the lowest boiling point, while 1,4-dichlorobutane is last because it has the highest boiling point.
| Type of Cwith 2nd Cl
| # of H’s on C with 2nd Cl before rxn
| Experimental % Abundance
| Relative Abundance, ra
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