PLEASE ANSWER THIS IS ANALYTICAL CHEMISTRY DON'T REJECT I NEED THIS :--(( You are hired by a company producing vitamins. Knowing that you have background in analytical chemistry, your first assignment isthe analysis of Vitamin C.1. From a list of chemicals below, choose the reagents that you need for the analysis and state the purpose of the chosen reagent injust 1 sentence.CHEMICALS/REAGENTSSolid Caco3Solid Naz5203-5H200.10M HCINH3-NHẠCI bufferSolid KIO3Eriochrome Black T0.50M H2SO43.0 M NH3Solid NazCO3Phenolphthalein0.30M H2SO40.1M NaOHSolid KIStarch indicator0.04M CusO,Methyl orangeIn your answer, follow the format: Reagent - Purpose of the Reagent2. In the preparation of the titrant, the solution must be aged for at least 24 hours in the dark. State in just 1 sentence why this stepmust be done.Use the editor to format your answer

We are tasked to analyze vitamin C.

You are hired by a company producing vitamins. Knowing that you have background in analytical chemistry, your first assignment is the analysis of Vitamin C. 1. From a list of chemicals below, choose the reagents that you need for the analysis and state the purpose of the chosen reagent in just 1 sentence. CHEMICALS/REAGENTS Solid Caco; Solid Na;S203-5H20 0.10M HCI NH3-NHẠCI buffer Solid KIO3 Eriochrome BlackT 0.50M H2SO4 3.0 Μ ΝH3 Solid NazCO3 Phenolphthalein 0.30M H;SO4 0.1M NAOH Solid KI Starch indicator 0.04M CusO, Methyl orange In your answer, follow the format: Reagent - Purpose of the Reagent 2. In the preparation of the titrant, the solution must be aged for at least 24 hours in the dark. State in just 1 sentence why this step must be done.

You are hired by a company producing vitamins. Knowing that you have background in analytical chemistry, your first assignment is the analysis of Vitamin C. 1. From a list of chemicals below, choose the reagents that you need for the analysis and state the purpose of the chosen reagent in just 1 sentence. CHEMICALS/REAGENTS Solid Caco; Solid Na;S203-5H20 0.10M HCI NH3-NHẠCI buffer Solid KIO3 Eriochrome BlackT 0.50M H2SO4 3.0 Μ ΝH3 Solid NazCO3 Phenolphthalein 0.30M H;SO4 0.1M NAOH Solid KI Starch indicator 0.04M CusO, Methyl orange In your answer, follow the format: Reagent - Purpose of the Reagent 2. In the preparation of the titrant, the solution must be aged for at least 24 hours in the dark. State in just 1 sentence why this step must be done.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter16: Reactions Between Acids And Bases

Section: Chapter Questions

Problem 16.7QE

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Many chemical reactions are carried out in the presence of buffers. Use the Henderson-Hasselbalch equation to provide a recommendation for a suitable acete/acetic acid buffer under the following reaction conditions. a) If a checial reaction produces hydroxide ion, OH-, what would be the range for the target pH of a buffer soution that would favor pH stabilizatoin under these conditions? Explain.
An approximately 0.1-molar solution of NaOH is to be standardized by titration. Assume that the following materials are available. Clean, dry 50 mL buret •Analytical balance 250 mL Erlenmeyer flask •Wash bottle filled with distilled water Phenolphthalein indicator solution Potassium hydrogen phthalate, KHP, a solid monoprotic acid (to be used as the primary standard) Briefly describe the steps you would take, using the materials listed above, to standardize the NaOH solution. Describe (the set up) the calculations necessary to determine the concentration of the NaOH solution.
Sodium acetate buffers are used for purification and precipitation of nucleic acids, as well as for protein crystallization and staining gels used in protein electrophoresis. It is very popular in hematology, since there is some evidence that acetate-buffered infusions show improved stability. Acetate buffers are inexpensive and simple to prepare, and can be stored at room temperature. 27-29. Calculate the pH of the acetate buffer solution that contains 0.50M acetic acid (Kb=5.56x10-10) and 0.50M sodium acetate. 30-32. Calculate the change in pH that occurs when 0.010 mol NaOH(s) is added to 1.0L of the acetate buffer. 33-35. Compare the pH change with that when 0.010M of NaOH is added to 1.0L of pure water. 36-40. How can the pH of the buffered solution not increase even though a strong base, NaOH, is added? Explain using the ions present.
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In Protein Precipitation, two liters of 5mM buffer solution with pH 5.2 is needed in the isolation of albumin. Calculate and measure the amounts (in grams if solid and in mL if liquid) of weak acid and conjugate base needed to be able to prepare the chosen buffer system in part A above. Express your answer in useful units (that is, prepare it from practical amounts or concentrations of starting materials). Pls. show the step by step process on solving the problem.
Many chemical reactions are carried out in the presence of buffers. Use the Henderson-Hasselbalch equation to provide a recommendation for a suitable acete/acetic acid buffer under the following reaction conditions. a) If a checial reaction produces hydroxide ion, H3O+, what would be the range for the target pH of a buffer soution that would favor pH stabilizatoin under these conditions? Explain.
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Your research advisor asks you to prepare a buffer solution at pH = 3.50 with capacity of about 0.100 M. Given the following solutions available (of any concentration), determine which species would give the best buffer, and give possible concentrations of the conjugate species. Dimethylamine pKb = 3.27; ethlyamine pKb = 3.35; aniline pKb =9.13; sodium nitrite pKb = 10.60.
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Unlike propanoic acid, magnesium hydroxide, Mg(OH)2 does not dissolve well in water. The Ksp of Mg(OH)2 is only about 2 × 10–11. Yet, what will be the result if 75 mL of 0.0050 M Mg2+ are mixed together with 55 mL of 0.00010 M OH–? Write an appropriate expression (equation) for the Ksp of Mg(OH)2(s). Then, calculate Qsp and state accordingly whether a precipitate will form or not
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