Hexaphenylbenzene Results

Hexaphenylbenzene Results - 98 412 404 = g g Step 2 g mol g...

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John Conkle CHE231-003 Hexaphenylbenzene Results Results: The only peak that should be present in the IR was the sp2 C-H 3100-3000cm-1 due to the benzene rings. The actual peak found was Step 1 Weight Diphenyacetone .241g Benzil .220g Product .404g Melting Point Over 200C Theoretical Yield .412g Percent Yield 98% Step 2 Weight E Stilbene .614g Pyridinium bromide 1.200g Product .913 Melting Point Over 200C Theoretical Yield 1.16g Percent Yield 79% Step 3 Weight KOH .403g Meso-Stilebenebromide .398g Product .133g Melting Point 58-59C Theoretical Yield .203g Percent Yield 66% Step 4 Weight Tetraphenylcyclopentadienone .100g Diphenylacetyle .100g Product .06g Theoretical Yield .143g Percent Yield 42%
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John Conkle CHE231-003 Calculations Step 1 . g mol g mol Tetra mol g mol etone Diphenylac g 412 . 1 38 . 348 * 1 1 * 28 . 210 1 * 249 . = Limiting Reagent 402 . 1 48 . 384 * 1 1 * 23 . 210 1 * 220 . = mol mol mol g mol Benzil g Percent Yield= Actual yield/ Theoretical Yield x100
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Unformatted text preview: % 98 412 . 404 . = g g Step 2 g mol g mol mol g mol Stilbene g 16 . 1 1 07 . 340 * 1 1 * 25 . 180 1 * 614 . = Limiting Reagent g mol g mol mol g mol omide pyridinebr 28 . 1 1 07 . 340 * 1 1 * 83 . 319 1 * 200 . 1 = Percent Yield= % 79 16 . 1 913 . = g g Step 3 g mol g mol mol g mol ne mesostilbe g 203 . 1 23 . 173 * 1 1 * 07 . 340 1 * 398 . = Limiting Reagent g mol g mol mol g mol gKOH 244 . 1 1 23 . 173 * 1 1 * 11 . 56 1 * 403 . = Percent Yield % 66 203 . 133 . = g g Step 4 g mol g mol mol g mol tetra g 142 . 1 66 . 534 * 1 1 * 48 . 384 1 * 103 . = Limiting Reagent g mol g mol mol g mol etylene diphenylac g 3 . 1 66 . 524 * 1 1 * 23 . 178 1 100 . = Percent Yield= % 42 143 . 06 . = g g John Conkle CHE231-003 Structures...
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