Question

define the type of reaction in electrolysis of water

Answer 1

Electrolysis of water is the decomposition of water into oxygen and hydrogen gas due to an electric current passed through the water. The reaction has a standard potential of −1.23 V, meaning it ideally requires a potential difference of 1.23 volts to split water.

This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.

History

Principle

Equations

Thermodynamics

Electrolyte selection

Techniques

Answer 2

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In pure water at the negatively charged cathode, a reduction reaction takes place, with electrons (e−) from the cathode being given to hydrogen cations to form hydrogen gas. The half reaction, balanced with acid, is: Reduction at cathode: 2 H+(aq) + 2e− → H2(g)