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1. If a student expected 8.4 g of acetylsalicyclic acid, and obtained 5.3 g. Calculate the...
1191 kg of acetylsalicylic acid (in kg ) can actually be produced by your group, the theoreticka yield 2165 kg. (the group cna yoeld 55%) Will the substance yield a positive test for the phenol functional group or negative? would its melting point be broad 105-140, 136-164, or 132-136? what does this indicate about purity?
Name Lab Partner LAB 9 REFLECTIVE EXERCISES Lab Section 1 What data did you collect to indicate that you successfully produced aspirin? What did your results indicate about the purity of the aspirin you obtained? Explain your answers. 2 Given that the melting point of salicylic acid is 159 C, can you be certain that the product you isolated was not pure solicylic acid that was unchanged during the reaction? Can you be certain that the product you isolated was...
Using the reaction shown below, calculate the percent yield obtained by a student when reacting 5.0 g of 3-methoxysalicylic acid with 3.9 mL of iodomethane in the presence of 10.3 g of potassium carbonate and obtaining 4.5 g of product, 2,3-dimethoxymethyl benzoate. You should determine which of the three reactants is the limiting reagent and the theoretical yield first.1a page 1.jpg
Use the Data provide below to answer question 1, 2 and 3: A Student is tasked with synthesizing butyl propanoate. The volume of butanol used: 4.60 ml The volume of propionic acid used: 7.50 ml Weight of butyl propanoate submitted: Vial with product - Empty Vial 14.727 g - 14.106 g = 0.621 g 1. Based on the information above, calculate the theoretical yield in grams (Show work for full credit): 2. Calculate the overall percent yield, based on the...
Name Section/CRN POST LABORATORY QUESTIONS 1. A student weighs out 3.52 g. of salicylic acid in a 100 ml flask and adds 2.3 mL of acetic anhydride (density 1.080 g/mL). Determine the maximum (theoretical) number of grams of acetylsalicylic acid she can prepare. 2. If the student obtained 4.21 g, of aspirin, calculate the % yield. Briefly, explain why she might have obtained this amount of product. 3. The solubility of Aspirin (acetylsalicylic acid) at 25 °C is 3.0 mg/mL...
A) A student weighed out 3.52 g. of salicylic acid in a 100 mL flask and adds 2.3 mL of acetic anhydride (density= 1.080 g/mL). Determine the maximum(theoretical) number of grams of acetylsalicylic acid she can prepare. B) If the student obtained 4.21 g. of aspirin, calculate the % yield. Briefly, explain why she might have obtained this amount of product.
2. In a laboratory experiment 4.567 g of nickel metal was obtained by a student. The student then calculated based on the amount of reactants used that 5.731 g were possible. What is the student's percent yield?
Any answers in depth would be very appreciated. 1. I have an organic unknown and want to know if it is an acid or a base. What are all the possible ways to find out? Clearly indicate how you’d differentiate between an amine, a carboxylic acid, and a phenol. 2. I have a compound that turns litmus red, and very slowly causes effervescence in bicarbonate, but only with vigorous mixing. I performed the ester test and it looked okay, but...
PLEASE HELP: Suppose a student obtained 0.34 g of crude salicylic acid. a) Approximately how many milliliters of water would be needed to just dissolve it at 75°C? b) How much salicylic acid would remain dissolved in that amount of water at 25°C? c) What percent of the original mass of the crude salicylic acid should be recoverable from the water at 25°C? ______
PREPARATION OF PHARMACEUTICALS - Fischer Esterification Reactions Q: Calculate the expected mass of both methyl salicylate and aspirin assuming 100% yield. EXPERIMENT7 PREPARATION OF PHARMACEUTICALS Fischer Esterification Reactions Almost 2500 years ago, physicians such as Hippocrates recommended that patients chew on the bark of the willow to alleviate pain. The active ingredient in willow bark was found to be salicin, a compound made of a molecule of salicyl alcohol bonded to a p-D-glucose molecule. In the stomach, the bond between...