Preparation and SN1 Reactivity of 2-Bromobutane Whitney Bellido Department of Chemistry‚ Illinois State University‚ Normal‚ IL 61790-4160 Submitted: April 4th‚ 2013 Introduction The overall goal of this experiment is to understand and be familiar of SN1 reactivity. We also learned how to prepare 2-Bromobutane by learning how to distill and extract this product from its organic layer. Finally‚ another goal was to specifically understand the relative reactivity of alkyl halides under SN1 conditions
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actual yield) Step 11: Show the calculation of the theoretical yield of calcium carbonate. The mole ration between CaCl2-.2H2O and CaCO3 is 1:1 that means that if we have 0.00680 moles of CaCl2-.2H2O we will get 0.00680 moles CaCO3 Convert the moles of CaCO3 to grams of CaCO3 = 0.00680 moles CaCO3 x 100 g CaCO3 1 mole CaCO3 = 0.68g CaCO3 Show the calculation of the percent yield. = Actual yield/Theoretical
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Mass of filter paper and dry calcium carbonate __1.5_g Net mass of the dry calcium carbonate __0.5__g (This is the actual yield) Step 11: Show the calculation of the theoretical yield of calcium carbonate. 0.00680 moles CaCO3 x 100 g CaCO3 1 mole CaCO3 = 0.68g CaCO3 Show the calculation of the percent yield. Actual yield/Theoretical yield x 100 (0.5/0.68) x 100 = 73.5% Conclusion: The objectives of this experiment are to predict the amount of product
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is very labor intensive for medium to large scale operations. Feed prices can vary drastically due to crop yields‚ gas prices‚ and product demand. After the initial investment of the Proskimmer the costs for producing this feed additive would be minimal. There is opportunity for duckweed to be used more as a feed source in coming years to alleviate increasing demand on corn and soy yields. Analysis According to North Carolina Reasearchers: “Duckweed holds great promise as an alternative feed
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moles of hydrogen gas collected. (4 points) n = [pic] 4. If magnesium was the limiting reactant in this lab‚ calculate the theoretical yield of the gaseous product. Show all steps of your calculation. (4 points) 5. Determine the percent yield of this reaction‚ showing all steps of your calculation. (3 points) Percent Yield = [pic] × 100 Conclusion: 1. Would the following errors increase‚ decrease‚ or have no effect on the calculated moles of gas collected
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Buchner funnel‚ the crystals were collected and washed in three 4-mL increments of 95% ethanol. The tetraphenylcyclopentadienone was then place in an oven for 15 minutes to dry. The final product was then weighed in order to calculate the percentage yield. Using a small amount of the product‚ the melting point was also determined. 5 Data: Name: Formula: Molecular Weight: (g/mol) Amount: (Collected) Moles: Density MP: (oC) BP: (oC) Hazards: Benzil (s) C14H10O2
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Calculator Calculate Percent Difference of Retail Sales Do you need to know how much retail sales were up or down compared to last year’s sales figures? That is put the two sales amounts in the calculator below to determine the percent increase or decrease in sales. For example‚ if ABC sales were $5200 this year and last year they were only $3400‚ the percent increase in sales was 52.94 or rounded to 53%. Previous Sales Amount #1 Current Sales Amount #2 Percent Increase / Decrease
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in Germany‚ Japan‚ and The U.S. and decrease imports into Latin America‚ Asia without Japan‚ and Mexico. 5. The analysis has assumed that each plant has a 100 percent yield (percent output of acceptable quality). How would you modify your analysis to account for yield differences across plants? To change the percentage yield‚ BioPharma‚ Inc. need to desert
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stops the reaction) and are called the theoretical yield. The theoretical yield is the amount of product that should be acquired during the experiment if all aspects go perfectly. However‚ due to experimental errors‚ very few labs do so. These results are called actual yield. The percent ratio between the theoretical and actual yield is called the percentage yield. It is calculated by taking the actual yield and dividing it by the theoretical yield‚ then multiplying it by 100%. The goal of a lab is
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overall health. The purpose of this experiment is to extract and find quantitative amount of Beta-carotene from a carrot sample. The raw product(carrots) was extracted using simple distillation. The purity of the product will be characterized using percent yield‚ thin layer chromatography‚ Beer’s Law‚ and UV-vis. Beer’s law is used because in this experiment we are comparing our extraction of B-Carotene to the Stock B-Carotene. Beer’s law shows that absorbence of light at a specific wavelength is proportional
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