You are required to analyze the semiconductor wastewater samples containing with cadmium. A sample solution was prepared by filtering the wastewater samples and store it in the plastic bottles. i) Suggest ONE (1) spectroscopic instrument that can determine the cadmium in the wastewater samples. Justify your answer. ii) Based on your answer in question (a) i), explain the principles of instrument that you had suggested.

You are required to analyze the semiconductor wastewater samples containing with cadmium. A sample solution was prepared by filtering the wastewater samples and store it in the plastic bottles. i) Suggest ONE (1) spectroscopic instrument that can determine the cadmium in the wastewater samples. Justify your answer. ii) Based on your answer in question (a) i), explain the principles of instrument that you had suggested.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.22QAP

See similar textbooks

Similar questions

Oo.113. Subject ;-Chemistry
Using the concepts of volumetry, classify statements as true or false. Justify the one(s) that you judge to be “false”. a) Constant weight is to repeat the entire analytical procedure, until 2 consecutive measurements of the scales vary in mass up to 0.002 g b) The nickel dimethylglyoximate precipitate is of the true crystalline type c) Gravimetric factor is the relationship between the mass of starting material and the mass of the product d) In direct determination, volatilization gravimetry, the volatilized sample is collected on a certain (previously determined) mass of appropriate adsorbent material (silica, alumina) and weighed up.
(a) Name a metal which does not stick to glass?(b) Name a non-metal which is good conductor of electricity?(c) Name the metal which is commonly used in thermit welding?(d) What gets deposited at the cathode, a pure or impure metal?(e) What is the nature of Zinc oxide?
Magnesium, the element, is produced commercially by electrolysis from a molten salt (the “electrolyte”) using a cell similar to the one shown here. Chlorine gas is evolved as the voltage is applied in the cell. Knowing this, identify the electrolyte
After studying the separation scheme for Group III cations and using your background knowledge on separation of Group I and Group II cations: (a) devise a flow chart or schematic diagram to separate and confirm the presence of the given ions in the solution below; (b) write the chemical formula of the precipitates formed; and (c) provide a brief explanation about your schematic diagram.
The following is the brief summary of procedures for Expt. 8: Step 1: The unknown stock solution was prepared by dissolving 0.5185 g of a steel sample, yielding 100.0 mL of the solution. . Step 2: Aliquot 1 was prepared by diluting 10.00 mL of the unknown stock solution to 50.00 ml.. • Step 3: Aliquot 2 was made by mixing 10.00 mL of the unknown stock solution and 3.00 mL of 9.85 x 10³ M Mn² solution (standard). and then this mixture was diluted to 50.00 ml. • Step 4: After oxidizing Mn2* to MnO4, absorbance was measured from both Aliquots 1 and 2. If the absorbance values measured from Aliquots 1 and 2 are 0.0998 and 0.148, respectively, what would be the concentration of Mn² in Aliquot 1 ([X])? Ix [X] [S]+[X] Isx = 7.14×10 M 1.22 10 M 2.8410 M 9.38×10 M 847×10 M 3
The salt bridge was between copper and zinc.
A solution of HCI is standardized against a sample which has been previously found to contain 71.22% Na2CO3, and no other basic material. The sample weighing 0.5962 g is treated with 32.7 mL of the acid and the excess acid then requires 1.52 mL of NaOH solution. If 1.00 mL of the acid is equivalent to 0.9690 mL of the NaOH, calculate for the normality of each solution.
(a) Write the definition of reduction and oxidation. (b) Ammonia oxidizing bacteria (AOB) play an important role in nitrogen cycle. They are also utilized in engineered systems to remove ammonia in wastewater treatment. They obtain energy by oxidizing ammonia NH3 into nitrite (NO2-) and reducing oxygen to water. Balance the reduction and oxidation reactions driven by AOB. (c) Combine the redox reactions into a single reaction. (d) Find ΔG° for the combined reaction. (e) Find ΔG for the given conditions: [NH3] = 2.7 × 10-3 M; pO2 = 0.21 atm; [NO2-] = 1.2 × 10-5 M. If necessary assumeneutral pH (i.e., pH = 7). Are the given conditions favourable for AOB growth?
10. The color change of a chemical indicator requires an over titration of 0.03 mL. Calculate the percent relative error if the total volume of titrant is(a) 50.00 mL. (b) 10.0 mL. (c) 25.0 mL.(d) 30.0 mL.
As1...With the aid of a well labelled diagram illustrate how you would use poloragraphy analytical (qualitative and quantitative). 2. Analytical chemistry
A solution of HCI is standardized against a sample which has been previously found to contain 71.22% NazCO,, and no other basic material. The sample weighing 0.5962 g is treated with 32.7 mL of the acid and the excess acid then requires 1.52 mL of NaOH solution. If 1.00 mL of the acid is equivalent to 0.9690 mL of the NaOH, calculate for the normality of each solution.