An Old Classmate Who Works for Eagle Metals Company on the Night

Short Answer

An old classmate who works for Eagle Metals Company on the night shift was supposed to do a gold plating job, in which he put 4.5000 troy ounces of gold (1 troy ounce = 31.103 gram)on a medallion using the reaction,Au(CN)₄^-(aq)+ 3 e^- Au(s)+ 4 CN^- He somehow got 4.8527 troy ounces of gold on the medallion instead of the correct amount. Calculate how many hours, minutes, and seconds he should run the cells with the leads reversed, using a current of 1.350 amperes, to fix the error and bring the medallions down to the correct weight.