After the solid has dissolved (it may dissolve, precipitate, and redissolve), heat the mixture for an additional 10 minutes at about 100°C to complete the reaction. (Final product crude Acetaminophen) <--What if the following was heated to 200 °C instead?
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Heat the reaction mixture, (p-aminophenol, distilled H2O, and acetic anhydride). with stirring, directly on a hot plate, using a thermometer to monitor the internal temperature (about 100°C). After the solid has dissolved (it may dissolve, precipitate, and redissolve), heat the mixture for an additional 10 minutes at about 100°C to complete the reaction. (Final product crude Acetaminophen) <--What if the following was heated to 200 °C instead?
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- Upon completion of a chemical reaction, you find you have a mixture of benzoic acid and ethyl benzoate. Propose a procedure to separate the ethyl benzoate from the mixture. You should look up the structures of benzoic acid and ethyl benzoate.A researcher wishes to obtain a glycoside (an organic compound) from an aqueous plant extract using the solvent extraction technique. She therefore performs the following steps: Step 1: An aqueous solution (100 mL) containing 7 g of the glycoside was shaken with 50 mL of ethyl acetate. Step 2: The resulting aqueous layer from Step 1 was further shaken with 50 mL of dichloromethane. Given that: KD for the glycoside in ethyl acetate-water = 0.8 KD for the glycoside in dichloromethane-water = 0.9 (i)Calculate the total mass of glycoside extracted. (ii)If the molar mass of the glycoside = 784.3 g/mol, calculate the molar concentration of the glycoside remaining in the aqueous layer after each extraction.After graduating from your PhD, you are now working as a post-doctoral researcher in BASF , the world’s largest multinational chemical company. The management of your R&D department decided to look at the potentiality of chloroform-methanol mixture in removing the lipids of various biological systems. Your boss, a senior scientist at your department, thinking about the hydroxyl group on the alcohol and thet hree chlorines on the CHCl3 , suggested that the mixture is probably non-ideal. Being one of her brightest colleagues, she then tasked you to graph the partial molar enthalpies of the chloroform methanol mixture as a function of mole fraction. Ardently, you accepted the challenge and went back to your office. After several hours of searching, you finally come up with enthalpy of mixing data at 50oC fort his mixture (See the picture). Please provide the graphs that the boss has asked you for. Put both curves on the same graph. Note: provide your excel file for this
- 2.4 Why must some organic reactions occur in the absence of water? Describe how you can remove residual dissolved water from an organic solvent.In the workup of the grignard reaction of turning bromobenzene to benzoic acid, we start by mixing the grignard with HCl and diethyl ether. We discard the aqueous layer and wash the organic layer with water. Then, the organic layer is extracted with NaOH. Then, the extracts are heated to remove ether. Then, it is precipitated with HCl. Precipitate collected. Let it dry and finally, purified with toluene and hexanes. Please make a flowchart of the process of this workup indicating what products and byproducts are forming. And what compounds are in the aqueous layer and organic layer in the steps.Why is it important to thoroughly vortex the contents of the vial after adding reagent 4 (Steps 3 and 4., stage 1). To ensure that the two immiscible solvents come into contact with each other, permitting the derivatization reactions to occur. B.To ensure that the solution is mixed thoroughly. To ensure that all the amino acids are transferred to the lower aqueous layer so that a full extraction occurs. To remove all the interferring compounds by transferring them to the upper organic layer Hint: Reagent 4 is the derivatizing agent dissolved in octane.