State Brronsted-Lowry theory of acids and bases with one example of each. | web4study

State Brronsted-Lowry theory of acids and bases with one example of each.



Bronsted- Lowry Theory of Acids and Bases:

Johannes Bronsted’ a Danish chemist and Thomas Lowry an English chemist together gave a valuable definiti.on of acids and bases in 1923.

Concept of Acids:

According to Bronsted-Lowry, ‘A substance which has a tendency to donate one or more protons (W) is called an acid, Example: HCI is an acid because it can donate a pair of a proton to a compound which accepts it.

In the aqueous soln of Hcl, the HCI molecule an acid gives a proton to H20 molecule, forming H30 ion.

Hence HCI is a proton donor and therefore an acid.

Concept of Base:

According to Bonsted-Lowry, a base is a species or substance which accepts or tends to accept a proton.

Example: Ammonia NH3 accepts a proton from water H20, to form NH/ Hence ammonia NH3 is a base.


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