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- An organic chemistry laboratory Extraction; the extraction of crude naphtalene- benzoic acid mixture. Naphthalene is a suspect carcinogen and is toxic to aquatic life. Find an alternative pair of molecules that adhere better to the principles of green chemistry and can be separated by extraction using green' solvents. (kindly answer fully)Restate the paragraph. The main objective of the laboratory activity was to make aspirin also known as acetylsalicylic acid in its scientific name. It was successfully done as aspirin was synthesized using the combination of salicylic acid and acetic anhydride. In this reaction, salicylic acid's hydroxyl group on the benzene ring interacted with acetic anhydride to generate an ester functional group. This is an esterification reaction that produces acetylsalicylic acid. Sulfuric acid was utilized as a catalyst to start the esterification reaction. Some unreacted acetic anhydride and salicylic acid, as well as sulfuric acid, aspirin, and acetic acid, remained in the solution after the reaction was completed. The process of crystallization was used to obtain pure crystals of a substance from an impure mixture. Upon completion of the lab, analysis, and calculations, , it is evident that the synthesis of aspirin is possible using these methods but that the yield will be relatively lowWhy is diethyl ether used as a solvent for the reduction reaction of the keystone (3,3-dimethyl-2-butanone) utilizing the reducing agent sodium borohydride (NaBH4). what is the purpose of was repeated washes with water? What is the purpose of repeated washes with brine?
- a reaction was preformed in which 0.550 mL of p-anisaldehyde was reacted with a slight excess of benzyltriphenylphosphonium chloride to make 0.646 g of p-methyoxystilbene. calculate the theoretical yield and percent yield for this reaction. 388.9 g/mol benyzyltriphenylphosphonium chloride 136.2 g/mol anisaldehyde d= 1.12 g/mL 210.1 g/mol p-methoxystilbenePls solve this question correctly in 5 min i will give u like for sure Balance the chemical equation of a reaction formed by the bromination of trans-cinnamic acid if we started with 0.3088 grams of trans cinnamic acid and 1mL of bromine. The product of this reaction is 2,3 - dibromo - 3- phenylpropanoic acidWhat is the experimental yield of CRUDE PRODUCT AND FINAL PRODUCT (grams and percentage) Experiment: Oxidation of -Chlorotoluene to o-Chlorobenzoic acid materials used dissolved 3.35 g of KMnO4 1.20 mL of 2-chlorotoluene was added to the mixture 3.0 mL of concentrated hydrochloric acid (pH~2) 10 mL of toluene -The crystals were isolated by vacuum filtration- Product Characterization 1.15 g of the crude product 0.93 g of the final product M.p. (final): 139-141 celsius
- TLC, a powerful analytical tool, can be used to monitor the progress of reactions. The synthesis of ethyl-3-coumarincarboxylate can be monitored by TLC by displaying the starting aldehyde 1, and coumarin product 2, which have very distinct Rf values (Hint: Think about the polarity of compounds 1 and 2 in terms of their abilities to H-bonds to silica gel). What can be determine about the progress of the reaction from analysis of the TLC shown below?In this lab you used acid/base extraction to remove acidic impurities, how could basic impurities be removed through extraction? Imagine the two compounds below are both dissolved in ethyl acetate (a standard organic solvent for extractions), create a diagram/flow chart that outlines steps that could be taken to separate them through acid/base extraction and recover each compound in its neutral Be sure to track when each compound is in the organic or aqueous layer.a) Write down the products that will occur when you extract HBr from 2-bromo-3-methyl butane in a basic medium, State the reaction conditions. Show which product is the main product. b) Does the main product show the geometric isomer, so please write together. If it shows write the isomers. c) Write the product that will be formed when the main product reacts with KMnO4 in a basic environment in cold
- Write the Method used in recrystallisation of benzoic acid, azobenzene, and p-nitroaniline.Write the reaction involved in Ferrox Test. a. What is the species responsible? b. Why is phenol negative in Ferrox Test? Based on the theoretical result, what is the order of reactivity of primary, secondary, and tertiary alcohols in the Lucas Test? a. Lucas Reagent contains ZnCl2 in HCl. What is the role of ZnCl2? What reagents are used in the esterification of Alcohols and Phenols? a. Write the reaction involved in Primary Alcohol (Ethanol) and Acetyl Chloride b. Write the reaction involved in Phenol and Acetyl Chloride What is the purpose of the Chromic acid test? a. What are the reagents used? b. Write oxidation reaction of Primary Alcohols and Secondary AlcoholsA wittig reaction experiment: Week 1 -》 preparation of phosphonium salt Materials : triphenylphosphine (5.3g),methyl Bromoacetate 3.36g (2.1ml) , ethanol 30ml . The yield obtained was 8.93g . Calculate the percentage yield Week 2 -》 Formation of the tlide and wittig reaction Materials :Phosphonium salt (5g), napthyl-2- carboxwaldehyde( 2.65g), 20 ml of water and 5 nl of Nahco3. Yield obtained was 0.51g .Calculate the percentage yield Week 3: Solvent free wittig reaction Materials: Benzyltriphenylphosphonium chloride (0.5g ), 4 - Bromoabenzaldehyde (0.24g), Potassium phosphate (tribasi c) 0.275g .The yield obtained was 1.21g. Calculate the percentage yield