Question

The following equations show the chemical change during electrolysis of water:

image
At which electrode are these reactions occurring?


The reduction and oxidation of hydrogen and oxygen occurs at the anode.

The oxidation of hydrogen occurs at the cathode. The reduction of oxygen occurs at the anode.

The reduction and oxidation of hydrogen and oxygen occurs at the cathode.

The reduction of hydrogen occurs at the cathode. The oxidation of oxygen occurs at the anode.

Answer 1

Answer:

Explanation:

Reduction at cathode:

2 H+(aq) + 2e− → H2(g)

Oxidation at anode:

2 H2O(l) → O2(g) + 4 H+(aq) + 4e.