A solution of sodium chloride discharges 6.1×1016Na+ ions and 4.6×1016Cl− ions in 10 seconds. Find the current passing through the solution.
A solution containing magnesium ions(Mg2+), iron (II) ions (Fe2+)and copper ions(Cu2+). On passing an electric current through this solution which ions will be the first to be discharged at the cathode? Write the equation for the cathode reaction.