Difference Between Alkali and Base


There are multiple definitions of base:

A substance used to neutralize acid is called a base. Some of the bases that form neutral product with acids are metal hydroxides and metal oxides. Examples of base: zinc hydroxide and copper oxide. Base reacts with acid in order to make it neutral. Base is bitter in taste and is slippery in nature. They produce salt molecules and water on reacting with acids. Types of bases are strong base and weak base. Example of strong base is NaOH. Example of 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 are bases. It is a basic salt alkali earth metal or alkali metal. On adding alkali to an 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 is different from each other, here are the some of the major differences between alkali and base:

Difference between alkali and base



Bases do not dissolve in water

Bases that dissolve in water are alkali

All bases are not alkali

All alkali are bases

It neutralises acids

It releases OH- ions, accepts proton

Example: Zinc hydroxide , copper oxide

Example: potassium hydroxide, sodium hydroxide

These were some of the important differences between Alkali and base. To know differences between other topics in chemistry you can register to BYJU’s or download our app for simple and interesting content. India’s largest k-12 learning app with top notch teachers from across the nation with excellent teaching skills. Find notes, question papers for other subjects like Mathematics, Physics, Biology and various competitive exams as well. Enjoy learning with great experience.

Related Links

Practise This Question

Which statement is true regarding the following structure?