Procedure1.00,2.00,3.00,4.00,5.00 ml of the standard Fe2+ solution was pipetted into separate100mL volumetric flasks. The flasks were then filled with 5mL of toxic water, 5ml of 2Msodium acetate, and 4mL of 3M NH2OH. The flasks were then diluted with DI water to the100mL mark, mixed, and let sit for 5 minutes. After 5 minutes, the absorption spectrum of theFeLn²+ for each of the Fe2+ solutions was measured using a spectrophotometer The absorbancewas recorded at a peak wavelength of 510. |Results and DiscussionVol FeWavelength (nm) AbsConcentration15160.02225210.03135220.04145220.05155130.024о What was the concentration?O Discussion of the results. Why do we care about the concentration ofwater? Is this concentration high or low? What are the implications?

Step 1: To calculate the concentration of Fe²⁺ in each solution, we'll utilize the Beer-Lambert Law,…

Answered: Procedure 1.00,2.00,3.00,4.00,5.00 ml…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Extraction of DNA involves the use of a 1 M phosphate buffer (1-liter volume) having the hydrogen ion concentration of 6.165950019 x 10-9 M. Three pKa of phosphoric acid are available Concentrated phosphoric acid (85% w/w; Sp. Gr. = 1.70; MW = 98 g/mol) Sodium dihydrogen phosphate monohydrate (MW = 138g/mol) Sodium biphosphate heptahydrate (MW = 268g/mol) Tribasic sodium phosphate monohydrate (MW = 182 g/mol) Sodium hydroxide pellets (40 grams/mol) Question: What is the pH of the solution? (answer in two decimal places) How much of the weak acid component should be used? (Note for answer: Round to the nearest hundredth and include the unit such as "grams or milliliters"; Ex. 100.00 grams or 100.00g for weight & 100.00 milliliters or 100.00 mL for volume) Question: What is the suitable buffer component to be used? (Note for the answer: Separate the two components with “and”; Ex: Ammonia and Ammonium chloride) Question: How much of the salt component should be used?…
A piece of Gold weighing 12,359 Kg is suspected of being contaminated with Iron. To perform an instrumental analysis and To confirm whether or not it contains Fe, a portion of the sample (0.954 g) is taken from the piece and dissolved with 25 mL of aqua regia. Heats up For its complete dissolution, it is cooled and made up to 100 mL. A 10 mL aliquot is taken from this solution and made up to 50 mL. From This last solution is given the appropriate treatment to visualize Fe+2, for which the 1,10-phenanthroline reagent is added. (it forms a complex that is red in color) and is taken to a visible spectrophotometer and with a 12 mm cell a absorbance of 0.45. Previously, a calibration curve of Fe+2 was obtained under the same instrumental conditions obtaining the following data: (view table) Calculate the purity of the gold piece, assuming impurities only due to Fe.
What mass of MgCl₂ 6H₂O is required to make a 0.200 dm³ stock solution containing 25.0 ppm Mg(II)? What volumes of this stock solution are required to make 10.0 cm³ standard solutions containing 5.00, 1.00 and 0.10 ppm Mg(II)?
ASAP: Please help me solve for Average Molarity of EDTA Standard Solution and Ca Titer (mg Ca/mL of EDTA Solution). Show step by step solution. This is the data. Please explain thoroughly as well.
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Extraction Pre-Lab Question 14 Status: Not yet answered | Points possible: 1.00 Type answer: Suppose you are working with a NaOH stock solution but you need a solution with a lower concentration for your experiment. Calculate the volume (in mL) of the 1.410 M stock NaOH solution needed to prepare 250.0 mL of 0.1273 M dilute NaOH solution. here to search 2 F12 P Cla Hon
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