ElectrochemistryHard
Question
A solution containing Na+, NO3-, Cl-, and SO42- ions, all at unit concentrations, is electrolyzed between nickel anode and platinum cathode. As the current is passed through the cell
Options
A.pH of the cathode increases
B.Oxygen is the major product at anode
C.Nickel is deposited at cathode
D.Chlorine is the major product at anode
Solution
At cathode: Reduction of Na+ dose not occur but reduction of H2O occurs to give OH- and H2(g), so pOH decreases and pH increases.
At anode: Oxidation of Cl- ions occur to give Cl2 (g). Likewise, oxidation of NO-3 and SO42- dose not occur but oxidation of H2O occurs to give H+ions and H2(g). So ph decreases at anode.
At anode: Oxidation of Cl- ions occur to give Cl2 (g). Likewise, oxidation of NO-3 and SO42- dose not occur but oxidation of H2O occurs to give H+ions and H2(g). So ph decreases at anode.
Create a free account to view solution
View Solution FreeMore Electrochemistry Questions
The standard reduction potential of Cu2+ / Cu and Cu2+ / Cu+ are 0.339V and 0.153 V respectively. The standard electrode...EMF of a cell in terms of reduction potental of its left and right electrodes is...A current of 2 A was passed for 1 h through a solution of CuSO4 0.237g of Cu2+ ions were discharged at cathode. The curr...The temperature coefficient, of the emf i.e. = - 0.00065 volt. deg-1 for the cell Cd | CdCl2 (1M) | AgCl (s) | Ag at 25o...The efficiency of an hypothetical cell is about 84% which involves the following reaction :A (s) + B2+ (aq) → A2+ ...