i. A Bronsted acid is proton donor whereas, a Bronsted base is proton acceptor.
ii. The strength of the acids / bases depends upon the tendency to donate / accept the proton.
iii. Water is amphoteric because it donates as well as accepts proton.
iv. A pair of Bronsted acid-base which differ by a proton is known as conjugate pair of Bronsted acid and Bronsted base
Substance + H+ ion = Conjugate acid
Substance – H+ ion = Conjugate base
