posted by Rishikesh .
Chromium metal can be plated onto an object from an acidic solution of dichromate ions. What average current is required to plate 17.8 g of chromium metal in a time of 2.20 h?
amperes x seconds = coulombs.
96,485 coulombs will deposit 1 equivalent weight of Cr.
Equivalent weight Cr = atomic mass/change in number of electrons in the half reaction.