Question

11. During the electrolysis of aqueous KCl solution using inert electrodes, gaseous hydrogen is evolved at one electrode and gaseous chlorine at the other electrode. The solution around the electrode at which hydrogen gas is evolved becomes basic as the electrolysis proceeds. Which of the following responses describe or are applicable to the #cathode and the reaction that occurs at the cathode? (1) the positive electrode (2) the negative electrode (3) 2 C Cl2 + 2 e (4) Cl2 + 2 e 2 cl (5) 2 H20 02 +4 H+ +4 e (6) 2 H20+2 e H2 + 2 OH (7) electrons flow from the electrode to the (8) electrons flow into the electrode from the external circuit external circuit (9) oxidation (10) reduction (a) 2, 6, 8, 10 (b) 1, 5, 7,9 (c) 2, 5, 7,9 (d) 1, 6, 8, 10 (e) 2, 6, 8, 9

Answer 1

During the electrolysis of aqueous KCl solution using inert electrodes, gaseous hydrogen is evolved at one electrode and chlorine on another. The reaction that occurs on cathode is (6). 2H20 + 2 e- -------> H2 + 2 OH-.

The electrode is negative electrode. The electrons will flow into the electrode from the external circuit. As seen from the reaction reduction is happening.

Therefore, correct option are 2,6,8,10.

So, the correct option is a.