I had an organic lab that didn\'t read the first column and we reran it again an

Question

I had an organic lab that didn't read the first column and we reran it again and ended up with the same thing. The lab was over Radical Halogenation and Gas Chrmatography. We used the light to dissociate the chlorine molecue. My questions is this.... What could I have done wrong in this expeirment for the GC not to read the first line and if not me then why did this happen? Is GC reliable? Thanks

Also, 1-Chlorobutane has two types of 2 hydrogens relative to their position of the chlorine atom in the molecule. Can the results show an equal amount of chlorination at each 2 degree site? Explain for any difference observed in the amount of chlorination at each site.

Explanation / Answer

GC is highly reliable technique. But based on the detectors you can see the line in GC. Since you used 1-chlorobutane which doesnot have any chromophore, you need to verify its detector is suitable for that.

next, is 1-chlorobutane will undergo chlorination at each CH2 and CH3 groups in different manner. Since CH2 radical is more stable than CH3 radical, the propensity to undergo radical halogenation at CH2 position is far higher than CH3 position. 1,1-dichlorobutane, 1,2-dichlorobutane, 1,3-dichlorobutane, and 1,4-dichlorobutane are the expected products and 1,3-dichlorobutane forms as the maor product.

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