A manufacturer wants to generate chromium plate, but had only potassium dichromate as a reagent to start with. An acidic solution of potassium dichromate can be reduced to chromium(III), which can be further reduced for plating according to the reactions below. Cr203- + 14H* + 6e¯ → 2Cr³+ + 7H2O Cr3+ + 3e → Cr How many electrons are transferred to produce ONE chromium atom during the combined processes? [?]e / Cr atom Number of Electrons Enter

A manufacturer wants to generate chromium plate, but had only potassium dichromate as a reagent to start with. An acidic solution of potassium dichromate can be reduced to chromium(III), which can be further reduced for plating according to the reactions below. Cr203- + 14H* + 6e¯ → 2Cr³+ + 7H2O Cr3+ + 3e → Cr How many electrons are transferred to produce ONE chromium atom during the combined processes? [?]e / Cr atom Number of Electrons Enter

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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1
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Table 20.1 Half Reaction F2 (g) + 2e7 Cl2 (g) + 2e Br2 (1) + 2e 2C1™ (aq) 2Br (aq) O2 (g) + 4H+ (aq) + 4e¯ Ag (s) → Ag+ e Fe3+ (aq) + e 12 (s) + 2e™ Cu2+ + 2e 2H+ 2e Pb2+ + 2e™ Ni2+ + 2e Lit + e 2F (aq) - Fe2+ (aq) 21 (aq) Cu (s) H2 (8) Pb (s) Ni (s) Li (s) E°(V) +2.87 +1.359 +1.065 2H₂0 (1) +1.23 +0.799 +0.771 +0.536 +0.34 0 -0.126 -0.28 -3.05 21) Using Table 20.1, which substance can oxidize I (aq) to 12 (s)? A) Cu²+ (aq) B) Br (aq) C) Ag (s) D) Br2 (1) E) Ni2+ (aq)
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