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Author Question: An iron plate of 0.559 m2 surface area is to be chrome plated using a chromic acid-sulfuric acid ... (Read 78 times)

Bob-Dole

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on: Jul 8, 2021
An iron plate of 0.559 m2 surface area is to be chrome plated using a chromic acid-sulfuric acid plating bath. The anode and cathode half-equations are:

Cathode: Cr2O72-(aq) + 14 H+(aq) + 12 e-→ 2 Cr(s) + 7 H2O(l) E° = 0.320 V
Anode: 2 H2O(l) → O2(g) + 4 H+(aq) + 4 e-E° = 1.229 V

Determine the minimum energy needed to produce a plating 0.115 mm thick on the iron plate. The density of chromium is 7.19 g/cm3.
◦ 526 kJ
◦ 780 kJ
◦ 1.05 × 103 kJ
◦ 4.68 × 103 kJ
◦ 9.36 × 103 kJ
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by Bob-Dole on Jul 8, 2021

ynlevi

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Reply #1 on: Jul 8, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Bob-Dole

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Reply 2 on: Jul 8, 2021
Thanks for the timely response, appreciate it

bigcheese9

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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