What is neutralisation?

Many chemical reactions take place in our body and in our surroundings. Acids and bases are the common reacting agents. One important reaction that takes place regularly is a neutralisation reaction. Let us read more on this type of reaction.

What is a neutralization reaction?

A neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products.


Acid + Base → Salt + Water

The above reaction is the general schematic representation of a neutralisation reaction. The reaction between an acid and a base invariably gives salt and water and is called neutralisation.

How does the neutralisation reaction takes place?

When an acid and an alkali are mixed together, a chemical reaction happens. The acid and the alkali cancel each other out and then the neutralisation reaction occurs. Neutralisation can be carried out gradually. Acid rain is a neutralisation reaction.

Mechanism of the reaction

In a neutralisation reaction, one H+ ion of acid is neutralised by one OH ion of the base. When all the H+ ions in the acidic solution are neutralised by the same number of OH ions of basic solution it is called complete neutralisation.


  • HCl + NaOH → NaCl + H2O
  • 3HNO3 + Fe(OH)3 → Fe(NO3)3 + 3H2O


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