1. 5.00 L of 0.169 M solution of Au2(SO4)3 is electrolyzed with a current of 13.0 amperes for 80.4 minutes. Gold is plated on the cathode. What mass of gold is produced?
2. An aqueous AgNO3 solution has a concentration of 0.1 M. one liter of the solution is electrolyzed by a constant current of 0.10 ampere for 10 hours.
a. What weight of silver metal is deposited at the cathode?
b. What volume of dry oxygen gas, measured at STP, is liberated at the anode?
c. What is the molarity of the silver ion in the solution at the end of the electrolysis?
3. Give the net reaction and half reactions for the electrolysis of molten CoCl¬2 and aqueous CoCl2. (please look up E0red)
4. Review discussion on corrosion.
1 year ago