A current of 4 amp was passed for 1.5 hours through a solution of copper sulphate when 3.2 g of copper was deposited. Calculate the current efficiency.

Three electrolytic cells A,B and C containing electrolyses of zinc sulphate, silver nitrate and copper sulphate respectively were connected in series. A steady current of 1.50 amp was passed through them until 1.45g of silver were deposited at the cathode of cell B. HOw long did the current flow?

A solution of CuSO_4 is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass of copper deposited at the cathode?

A current of 1.5A is passed through 500 mL of 0.25M solution of zinc sulphate for 1 hr with a current efficiency of 90%. Calculate the final molarity of Zn^(2+) assuming volume to be constant.

A current of 3A was passed through a solution of AuCl_4^- ions using gold electrolyte and it caused deposition of 1.234g of Au. The time for which the current was passed is

A solution of copper sulphate is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass of copper deposited at cathode ? The atomic mass of copper = 63.5 a.m.u.

Three conductivity cells A, B and C containing solutions of zinc sulphate, silver nitrate and copper sulphate respectively are connected in series. A steady current of 1.5 amperes is passed through them until 1.45 g of silver is deposited at the cathode of cell B. How long did the current flow ? What mass of copper and what mass of zinc got deposited in their respective cells ? (Atomic mass : Zn = 65.4 u, Ag = 108 u, Cu = 63.5 u)

The amount of silver deposited from a solution of silver nitrate when a current of 965 coulombs was passed is

Two electrolytic cells containing silver nitrate solution and dilute sulphuric acid solution were connected in series. A steady current of 2.5 amp was passed through them till 1.078 g of silver was deposited? [Ag=107.8g mol^-1, 1f=96500C] What was the weight of oxygen gas liberated?

Two faraday of electricity is passed through a solution of CuSO 4 ​ . The mass of copper deposited at the cathode is : (at mass of Cu=63.5 u)