Results lab 8

Results lab 8 - Michele Chan Chem 2211L Adna Muliawan...

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Michele Chan Chem. 2211L Adna Muliawan Results 40ml of glacial acetic acid 2.012g of trans-stilbene 4.002g PHPB 1.580g KOH 20ml Ethelene glycol 3.734g of bromostilbene Final product 0.9041g of diphenylacetylene Melting point 56-58 degrees Celsius 2.012 g C 14 H 12 1 mol trans- stilbene 1 mol trans-stilbene 178 g Diphenylacetylene 180g trans- stilbene 1 mol Diphenylacetylene 1 mol Diphenylacetylene = 1.989g Diphenylacetylene 4.002 g C 5 H 5 NHBr 3 1 mol C 5 H 5 NHBr 3 1 mol Diphenylacetylene 178 g Diphenylacetylene 319.7 g C 5 H 5 NHBr 3 1 mol C 5 H 5 NHBr 3 1 mol Diphenylacetylene = 2.228g Diphenylacetylene 1.580 g KOH 1 mol KOH 1 mol Diphenylacetylene 178 g Diphenylacetylene 56.1 g KOH 2 mol KOH 1 mol Diphenylacetylene = 2.507g Diphenylacetylene Limiting reactant: trans -stillbene. Theoretical yield of diphenylacetylene: 1.989 g Final Percent Yield: (0.9041 g / 1.989 g) x 100 = 45.6 % Discussion The final percent yield we got for diphenylacetylene was 45.6 % so it was about half of what it should be. However, we think this is due to a personal experimental error. At the end step
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Results lab 8 - Michele Chan Chem 2211L Adna Muliawan...

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