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Wednesday, February 5, 2014

4.08 Lab Report

04.08 Percent Yield: Percent Yield Lab disguise and Rubric Before You Begin: You may either simulate and scatter this document into a word processing platform of your survival of the fittest or print this page. 1.Create a entropy screening board to record your data from the procedure. Be sure that the data control panel is neat and organized and that all(a)(a) measurements have the counteract meaningful figures and units. (3 points) Mass: Empty peach tree- 24. 35g Dish w/ NaHCO3- 37.06g Dish by and by reaction- 40.06g Dish after H2O evaporated- 31.52g? 2. Write the perform equilibrise equation for the reaction that occurred in this lab. Hint: H2CO3 is non a final convergence of the double-replacement reaction; it breaks down (decomposes) flat into devil products. (3 points)??                            HCI + NaHCO3 ? H20 + CO2 + NaCI? 3. The NaHCO3 is the limiting reactant and the HCl is the excess reactant in this experiment. check over the divinatory go bad of the NaCl product, showing all of your release in the office below. (5 points) 12.71 g of NaHCO3 divided by 84.01 g/mol ( hoagie cumulation of it) = 0.1513 moles 0.1513 moles of NaHCO3 being consumed = 0.1513 moles of NaCI produced. I then regurgitate 0.1513 moles by molar mass of NaCl giving us the suffice of 8.8420 grams of NaCI which is the theoretical yield.? 4. What is the certain yield of NaCl in your experiment? try your work below. (4 points) 31.52 g - 24.35 g = 7.17 g ( Mass of NaCI after all weewee evaporated)? 5. Determine the percent yield of NaCl in your experiment, showing all work neatly in the property below. (5 points) Actual yield/ theoretical yield = 7.17g/ 8.8420g = 81%? 6. If you had not heated the product long enough to remove all of the water, explain in detail how that would have specifically change your calculated effective yield and percent yield. (5 points)If you want to bear a skillful essay, order ! it on our website: OrderCustomPaper.com

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