Illegal mining affected many rivers with extremely high deposits of heavy metals and particulate matter in the river of America making them unwholesome for drinking. With the help of your knowledge on analytical separation and analysis outline suitable analytical protocol that can be employed to recover polluted river bodies and make them wholesome for drinking.

Illegal mining affected many rivers with extremely high deposits of heavy metals and particulate matter in the river of America making them unwholesome for drinking. With the help of your knowledge on analytical separation and analysis outline suitable analytical protocol that can be employed to recover polluted river bodies and make them wholesome for drinking.

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

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 14.97QE: According to the Resource Conservation and Recovery Act (RCRA), waste material is classified as...

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As part of the analysis of water samples, the hardness of water is commonly measured and calculated. It is commonly expressed in ppm by mass (parts per million) of CaCO3. Parts per million is also equivalent to milligrams of CACO3 per liter of water. In a sample taken by an environmentalist, he was able to observe a hardness count of 205 mg CacO3/L. Given this hardness count of the sample, what is the molar concentration of Ca2+ ions in the water sample?
Write your complete solutions on yellow paper, round your answers to the appropriate number of significant figures, and box the final answer. The deadline for submission is at the end of the class. Note: You do not need to write your solutions for the items that can be derived from your calculators. 1. Three students (Saerom, Hayoung, and Jiwon) are asked to determine the ppm Ca in a drinking water sample by titration with EDTA. Each student performed five trials for the sample. The results in ppm Ca are the following: Saerom Hayoung Jiwon a. Get the mean, SD, and % RSD of each student's results. b. If the true value is 35 ppm, calculate the relative error of each student's results. c. Comment on the precision and accuracy of each student's results. The maximum % RSD and the relative error set by the lab is 5.0%. d. Use the following table to summarize your answers. Mean SD %RSD Relative Error Comment 31, 32, 33, 33, 32 35, 34, 34, 35, 34 35, 38, 33, 35, 37 Saerom Mean SD 95% CI…
Treatment of ammonia with phenol in the presence of hypochlorite yields indophenol, a blue product that absrobs light at 625 nm, which can be used for the spectrophotometric determination of ammonia. ocr -OH • NH, indophenol anion To determine the ammonia concentration in a sample of lake water, three samples are prepared. In sample A, 10.0 mL of lake water is mixed with 5 mL of phenol solution and 2 mL of sodium hypochlorite solution, and diluted to 25.0 mL in a volumetric flask. In sample B, 10.0 mL of lake water is mixed with 5 mL. of phenol solution, 2 mL of sodium hypochlorite solution, and 2.50 mL of a 5.50 x 10-4 M ammonia solution, and diluted to 25.0 mL. Sample C is a reagent blank. It contains 10.0 mL of distilled water, 5 mL of phenol solution, and 2 ml. of sodium hypochlorite solution, diluted to 25.0 mL. The absorbance of the three samples is then measured at 625 nm in a 1.00 cm cuvette. The results are shown in the table. Sample Absorbance (625 nm) A 0.374 В 0.621 0.045…
Give a detailed procedure of how chemical precipitation will be employed to remove heavy metals from water to make it wholesome for drinking.
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In this experiment, your goal is to determine the amount of lead present in a water sample and, if lead is present, to determine whether the level of contamination is potentially dangerous. Preliminary preparation of the sample has resulted in a solid of unknown composition. This solid contains lead (Pb 2+ ) in the form of a water soluble salt and gravimetric analysis will be used to determine the amount of lead present. Step 1. Preparation of precipitating agents : Dissolve a predetermine amount of sodium sulfate in distilled water to produce 100mL with a concentration of 0.175M. Transfer the solution in the burette.Step 2. Obtain 3 10-mL sample of wastewater which contains lead in an erlenmeyer flask.Step 3. Dilute the 10 ml sample with water to 100mL.Step 4. Add an excess amount of sodium sulfate to achieved complete precipitation.Step 5. Filter the solution using a pre-weighed filter paper.Step 6. Collect the precipitates in filter paper and dry in an oven at 105 o C for 3 hrs or…
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