Describe in words and by means of complete chemical equations, how a mixture of 1.25 g of benzoic acid tertbutylbenzene can be separated by applying the separation of 2 components by liquid-liquid extraction.
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- 5.0 mL of 1-butanol was mixed with 10 mL of HCl. The reaction was put on an ice bath and 4 mL of concentrated sulfuric acid was added. This mixture was refluxed for 45 min and then the product was co-distilled with water using a simple distillation apparatus. Water and the product are immiscible. 1-butanol has a molar mass of 74.12 g/mol, a density of 0.810 g/mL, and a boiling point of 118 C. The product has a molar mass of 92.57 g/mol, a density of 0.880 g/mL, and a boiling point of 78 C. What is the nucleophile in this reaction? What is the role of H2SO4 in this reaction? Calculate the theoretical yield for this reaction. Give your answer in grams. Select the following statements that can be said about the reaction shown.A student performs a crystallization on an impure sample of biphenyl. The sample weighs 0.5 g and contains about 5% impurity. Based on his knowledge of solubility, the student decides to use benzene as the solvent. After crystallization, the crystals are dried and the nal weight is found to be 0.02 g. Assume that all steps in the crystallization are performed correctly, there are no spills, and the student lost very little solid on any glassware or in any of the transfers. Why is the recovery so low?Which of the following refers to a composition in which its components cannot be separated by distillation? Ideal Azeotropic Eutectic Partially Miscible Binary mixture
- 5 g of cobalt carbonate and 13 mL of concentrated hydrochloric acid were used. In another glass, prepare a solution with 8.4 mL of anhydrous ethylenediamine and 2.8 mL of concentrated hydrochloric acid. They are mixed and added and 6.5 mL of peroxide were added to it.30% hydrogen, thenconcentrated hydrochloric acid is added, followed by60 mL of ethanol. 5.1234 g were obtained orange solid [Co (en) 3] Cl3 What is the percentage yield of the reaction. The reactions are shown in the images.Briefly describe the principles for separating the components of a mixture by solvent extraction.Briefly explain the principles involved in the separation of the components of a mixture by solvent extraction.
- When a solution of 1.00 g of ‘X’ in 100 ml of water was shaken with 10 ml of diethyl ether, 0.60 g of X was transferred to the solvent (ether) layer. When another solution of 0.5 g of ‘X’ in 100 ml of water was shaken with 5 ml of petroleum ether, 0.3 g of X was extracted by the solvent. Which of these ethers is a better solvent? Justify your answer using calculations.Oral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample. The stated should be 104.5, how??Oral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample.
- Why do two layers form when solutions containing water are added to the extracted dichloromethane (CH2CI-2) solution?Determine the mole fraction of p-dichlorobenzene dissolved in 1.00L of cyclohexane that shifts the vapor pressure from 78mmHg to 70 mmHg. Can you determine the mass of solute dissolved?250 mL of water sample was collected from a river and sent to a laboratory to determine the concentration of the total suspended solid. In the laboratory, 5 mL of the water sample was transferred to a 100 mL volumetric flask before diluted with distilled water to 100 mL. After that, 50 mL of the diluted water sample was transferred to a funnel containing a glass fiber filter and attached to a glass flask with the sidearm connected to a operating vacuum pump. Transferred diluted water sample was left drained through the glass filter before glass fiber was transferred to an oven to heat at 105 oC under a constant weight of 0.2654 g was obtained. If the initial weight of the glass fiber filter is 0.2431 g. Calculate the amount of the suspended solid in mg unit contained in the 250 mL collected water sample.