The Cr plating on a surface that measured 3.00 cm x 4.00 cm was dissolved in HCI. The pH was suitably adjusted, and 11.38 mL of 0.01386 M EDTA was then introduced. The excess reagent required a 2.31-mL back-titration with 0.00764 M Cu“. Calculate the average weight (in mg) of Cr (51.9961 g/mol) on each square centimeter of surface. 2+

The Cr plating on a surface that measured 3.00 cm x 4.00 cm was dissolved in HCI. The pH was suitably adjusted, and 11.38 mL of 0.01386 M EDTA was then introduced. The excess reagent required a 2.31-mL back-titration with 0.00764 M Cu“. Calculate the average weight (in mg) of Cr (51.9961 g/mol) on each square centimeter of surface. 2+

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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Question

The Cr plating on a surface that measured 3.00 cm x
4.00 cm was dissolved in HCI. The pH was suitably
adjusted, and 11.38 mL of 0.01386 M EDTA was then
introduced. The excess reagent required a 2.31-mL
back-titration with 0.00764 M Cu". Calculate the
2+
average weight (in mg) of Cr (51.9961 g/mol) on each
square centimeter of surface.

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