Lab_#1 - Preparation of Abstract The purpose of this lab...

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Preparation of Bromotriphenylmethane Abstract : The purpose of this lab was to Brominate tiphenylmethane with elemental Br using light to initiate the reaction. The reaction involved formation of free radicals in the presence of heat energy and then the addition of Br to get our product. The % yield obtained for this experiment was approximately 24.4%. Discussion : The product was achieved by a chain reaction, but the first step that occurred was forming of two free radicals due to Br-Br bond breaking, in the presence of heat energy. The next step involves the C-H bond to break on the triphenylmethane and forming another two free radicals. One of the Br pulls the Hydrogen to form Hydrogen Bromide and the other Br pulls the Carbon with a free radical to form the product bromotriphenylmethane.
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Position (cm -1 ) Intensity Bond Type Assignment 693.284 8.53708 C-Br stretch Alkyl-halide 757.888 30.4546 C-H bend Aromatic 1443.46 42.234 C-H bend Aromatic 1484.46 63.1298 C=C stretch Aromatic 3062.41 79.442 C-H stretch Aromatic
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  • Spring '15
  • George
  • pH, Reaction, Chemical reaction, Benzene, Erlenmeyer flask, free radicals, bromotriphenylmethane

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