250 mL of a waste solution obtained from the workshop of a goldsmith contains 0.1 M AgNO3 and 0.1 M AuCl. The solution was electrolyzed at 2 V by passing a current of 1 A for 15 minutes. The metal / metals electrodeposited will be:EAg+/Ag0=0.80V,  EAu+/Au0=1.69V