Case: Read the paragraph and answer the following questions

Electrolysis of water, also known as electrochemical water splitting, is the process of using electricity to decompose water into oxygen and hydrogen gas by a process called electrolysis. Hydrogen gas released in this way can be used as hydrogen fuel or remixed with oxygen to create oxyhydrogen gas, which is used in welding and other applications.

Which gas is collected at the cathode?

Hydrogen

At cathode 2H⁺ ions take 2 electron to convert itself into H₂ gas.

2H⁺ + 2e^- → H₂