Difference Between Alkali and Base


There are multiple definitions of the base.

  • A substance used to neutralize acid is called a base.
  • Some of the bases that form a neutral product with acids are metal hydroxides and metal oxides.
  • Examples of base: zinc hydroxide and copper oxide.
  • Base reacts with the acid in order to make it neutral.
  • The base is bitter in taste and is slippery in nature.
  • They produce salt molecules and water on reacting with acids.
  • Types of bases are a strong base and a weak base.
  • Example of a strong base is NaOH.
  • Example of a weak base is NH3.
  • Bases do not dissolve in water.


  • Alkali is a base.
  • It is a base that dissolves in water.
  • This is very important to remember-
  • Not all bases are alkali but all alkali is base.
  • It is a basic salt alkali earth metal or alkali metal.
  • On adding alkali to acid the pH of the mixture increase.
  • On adding acid to alkali the pH decreases due to the removal of alkali.
  • Neutralization is a reaction in which removal of alkalinity or acidity occurs.

To make you understand how alkali and base are different from each other, here are some of the major differences between alkali and base:

Difference between Alkali and Base

Base Alkali
Bases do not dissolve in water Bases that dissolve in water are alkali
All bases are not alkali All alkali are bases
It neutralizes acids It releases OH- ions, accepts a proton
Example: Zinc hydroxide, copper oxide Example: potassium hydroxide, sodium hydroxide

These were some of the important differences between Alkali and base.

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