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: Cr2O72- + 14 H+ + 12 e- → 2 Cr + 7 H2O E° = 0.320 V
Anode: 2 H2O → O2 + 4 H+ + 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
Correct Answer:
Verified
Correct Answer:
Verified
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