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- 6. While the DVM students are busy eating their meal, Raphaela and Jessie are washing the glasswares. While taking care of everything, they mixed the all the reagents used in the experiment and created a SUPER-POWER-NINJA-TURBO-NEO-ULTRA-HYPER-MEGA-MULTI-ALPHA-META-EXTRAUBER-PREFIX EXPLOSION!!! (YEAH!!!) when placed near a flame. When they tested the compound using the qualitative analysis, the following results were observed below. Propose a three possible structure of the compound.a. KMnO4 – brown precipitatee. I2/KI – yellow precipitateb. H2CrO4 – green solution/precipitatef. 2,4 – DNPH – yellow precipitatec. Lucas test – turbidity after heatingg. FeCl3 – purple solutiond. Tollen’s test – silver mirrorh. H2/Pt – 2 moles (there are two double bond present)Khaira performed the synthesis of ester X. Liquid-liquid extraction is needed to extract compound X fromthe aqueous reaction mixture. Given the solubility of ester X in the following solvents. Solvent Solubility of Compound X (g/mL solvent) at 25°C water 0.278 ethanol 1.027 acetone 1.309 dichloromethane 0.891 diethyl ether 0.759 a. Which solvent must she use to extract compound X? b. Calculate the KD. c. She transferred all of the aqueous reaction mixture in a separatory funnel, and she added 100 mL of theBEST solvent (from question a). If the total volume of the reaction mixture is 100 mL, calculate the g ofcompound X that will be extracted. (Based on literature; 5.0 g of the product will be synthesized from theamount of starting material she used.) d. Her partner, Jane, repeated the same experiment but this time, she performed the liquid-liquid extraction twiceusing 50 mL of the BEST solvent (from question a). Calculate the g of compound X that will be…in a benzoin cndensation reaction why is it necessary to check the pH
- Phenol vs salicylic acid Both of them undergo Esterification where acetic anhydride is added to both of them. Which among the two samples is faster in giving the results and why?What is the role of Glycerin in the assay of Boric Acid?I. The reagent prevents the formation of pink color earlier than the expected endpoint.II. The reagent allows the reaction of protons from the acid sample with the hydroxyl ions from the titrant.III. It enhances the water solubility of the difficultly soluble boric acid. a. I, II & III b. II & III c. I & II d. I only e. I & IIIDescribe why the inside wall of the flask is rinsed with deionized water during accurate titration. Does this washing affect the molar quantity of acetic acid in the sample? Describe..?
- What is the purpose of adding sodium carbonate in the mixture of water and water- soluble components obtained from the solid-liquid extraction step of isolation of alkaloids from tea leaves? A.Increases the solubility of alkaloids in water thus ensuring maximum yield B.deprotonates tannins so that they will remain in the aqueous layer during liquid-liquid extraction C.'hydrolyses cellulose thus separating it along with other water-soluble components D.protonates the alkaloid to make the solution acidicIn what way(s) might the results of the separation and purification procedure outlined be different if the following conditions exist? Q. Aqueous NaOH is used in place of aqueous NaHCO3.What will be the residue and what will be formed at cooler portion of test tubes if the tube containing CuO-sugar mixture is heated?
- Give the (general) chemical reactions of each test and underline the product that is observable (i.e., positive test indicator) 1. Sodium metal test 2. Ester test 3. Ceric ammonium nitrate test 4. Acetyl Chloride test 5. Iodoform test 6. lucas testKiko, a Chem 31.1 student, accidentally shuffled two test tubes with different compounds on his way to the laboratory. To confirm the possible identities of the compounds, Kiko added neutral KMnO4 and Lucas reagents to both test tubes labeled A and B. Test tube A gave a brown precipitate in neutral KMnO4 while test tube B produced a purple solution in the same test. Upon subjecting to Lucas Test, both test tubes produced layers. Which of the following are the possible identities of the compounds A and B? a. Sec-butanol and 3-methyl-3-pentanol b. n-propanol and tert-butanol c. isopropyl alcohol and 4-nitrophenol d. hexanol and cyclopentanolFor the following reactions, draw arrow-pushing mechanisms for each of the reactions that (a) extracted them into the aqueous layer and (b) forced them to precipitate out. Acidic compound precipitated after the addition of HCl.