Identify the metal if during a 1.000 hour long 2 electron electrolysis reaction 8.388 g of metal is deposited using a constant current of 4.000 A.

Question

Quizplus · Accepted Answer

The amount of metal deposited can be calculated using Faraday's laws of electrolysis. The charge passed is 4.000 A * 3600 s = 14400 C. For a 2-electron reaction, the moles of electrons is 14400 C / 96500 C/mol = 0.149 mol. The moles of metal deposited is 0.149 mol / 2 = 0.0745 mol. The molar mass of the metal is 8.388 g / 0.0745 mol = 112.6 g/mol, which corresponds to Cd (Cadmium).

Identify the Metal If During a 1