An Iron Plate of 0

Multiple Choice

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