1. A student synthesized 3.214g of Ni(NH3),Cl2 from 4.023g of NiCl2 6H₂O. He dissolved 0.81g of Ni(NH3) nCl2 in 40 mL of 1.0M HCl to make a sample for analysis. Molar mass: Ni 58.7; Cl2 71; NH3 17; H₂O 18. (1) A 0.20M Ni²+ standard solution had an absorbance of 1.666, while his sample had an absorbance of 0.705. Calculate the Ni2+ concentration in his sample and the mass percent of Ni in the product. Note: A = εbc.
1. A student synthesized 3.214g of Ni(NH3),Cl2 from 4.023g of NiCl2 6H₂O. He dissolved 0.81g of Ni(NH3) nCl2 in 40 mL of 1.0M HCl to make a sample for analysis. Molar mass: Ni 58.7; Cl2 71; NH3 17; H₂O 18. (1) A 0.20M Ni²+ standard solution had an absorbance of 1.666, while his sample had an absorbance of 0.705. Calculate the Ni2+ concentration in his sample and the mass percent of Ni in the product. Note: A = εbc.
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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