Electrolysis of water is an example of ______.

Question

Question

This question was previously asked in

SSC GD Constable (2022) Official Paper (Held On : 17 Jan 2023 Shift 2)

Answer 1

The correct answer is Decomposition reaction.

Key Points

Electrolysis of water is a decomposition reaction because it breaks down water into its constituent elements, hydrogen and oxygen.
Reaction: 2H₂O + electricity → 2H₂ + O₂
Electrolysis is the process of using an electric current to drive a non-spontaneous chemical reaction.
It is commonly used for the production of metals, such as aluminum and copper.

Additional Information

Bidisplacement reaction is also known as the double displacement reaction.
- It involves two reactants exchanging their ions to form two new products.
- For example, potassium nitrate reacts with aluminium chloride and forms aluminium nitrate and potassium chloride.
- Reaction: KNO₃ + AlCl₃ ↔️ Al(NO₃)₃+ KCl
Displacement reaction is also known as the single replacement reaction.
- It involves a more reactive element displacing a less reactive element from its compound.
- The reaction of potassium with magnesium chloride is an example of a single displacement reaction.
- Reaction: 2K + MgCl₂ → 2KCl + Mg
Combination reaction is also known as the synthesis reaction.
- It involves two or more reactants combining to form a single product.
- For example, when we burn magnesium ribbon (or magnesium), it gives a gray-black ash of magnesium oxide.
- Reaction: Mg + O₂→ MgO