Gold can be determined in solutions containing high concentrations of diverse ions by ICP-AES. Aliquots of50.0 mL of the sample solution were transferred to each of four 100.0 mL volumetric flasks. A solution wasprepared containing 10.0 mg/L Au in 20% H2SO4 and quantities of this solution were added to the samplesolutions to give 0, 2.5, 5, and 10 mg/L added Au in each of the flasks. The solutions were made up to a totalvolume of 100.0 mL, mixed, and analysed by ICP-AES. The resulting data are presented in the following table.Added Au, mg/LEmission Intensity Count12,56819,32426,62240,0210.02.55.010.0Calculate the concentration of gold in the original sample.

The values of added gold and emission intensity count can be given. To find the concentration of…

Answered: 20% H2SO4 L added Au1 i

Science

Chemistry

20% H2SO4 L added Au1 i

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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Diol

In chemistry there are so many chemical compounds that have a hydroxyl group but a chemical compound having two hydroxyl groups (-OH) is termed as a diol. It also implies the presence of two alcohols whereas polyols contain two or more than two hydroxyl groups (-OH). Glycol or 1,2-diol is an aliphatic diol that has two alcohol groups on adjacent carbon atoms. In industries, the most commonly used diol is ethylene glycol.

Question

Gold can be determined in solutions containing high concentrations of diverse ions by ICP-AES. Aliquots of
50.0 mL of the sample solution were transferred to each of four 100.0 mL volumetric flasks. A solution was
prepared containing 10.0 mg/L Au in 20% H2SO4 and quantities of this solution were added to the sample
solutions to give 0, 2.5, 5, and 10 mg/L added Au in each of the flasks. The solutions were made up to a total
volume of 100.0 mL, mixed, and analysed by ICP-AES. The resulting data are presented in the following table.
Added Au, mg/L
Emission Intensity Count
12,568
19,324
26,622
40,021
0.0
2.5
5.0
10.0
Calculate the concentration of gold in the original sample.

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