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: Cr₂O₇^2-(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.

Question

Quizplus · Accepted Answer

The Answer of 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: Cr₂O₇^2-(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. A)526 kJ B)780 kJ C)1.05 × 10³ kJ D)4.68 × 10³ kJ E)9.36 × 10³ kJ

An Iron Plate of 0