Free-Radical Bromination Lab Report

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For this experiment, the rates of free-radical bromination reactions were observed with various substrates. The rate of the C-H bonds in the different molecular environments were determined upon them undergoing radical bromination. The C-H bonds were unreactive, and in this experiment, they acted as functional groups in the reactions pertaining to radical halides. Five different compounds were exposed to bromine with light and darkness. Each one of the compounds contained a different type of C-H bond. The structures either contained a primary, secondary, or tertiary carbon. They were also broken down into being either benzylic, aliphatic, or aromatic. The molecular environments of the C-H bonds within the compound affected the rate directly when the bond underwent homolysis and was exposed to a halide radical. The free-radical substitution mechanism was used in regard to the bromination reaction. With this experiment, a prediction was made as to what order the compounds would react which was then compared to the actual observed order of the reactions. The various functional groups achieved throughout the experiment were done so by going from one reaction to another, such as an alcohol to an alkyl halide. One functional group that is not very reactive is hydrogen, which is typically not utilized. Hydrogen is used specifically in acid-base chemistry. One reaction that uses hydrogen is a free-radical bromination with a halogen which substitutes for one of the hydrogens on the molecule. The first step is initiation which is the generation of the…show more content…
This method was utilized because bromine only reacts in the presence of light, therefore all the solutions will react underneath the lamp. The ones in the dark did not react because there was no light present. The controls of DCM and DCM plus bromine were used to compare the test tubes to which were also placed underneath the

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