According to Lowry-Bronsted concept, base is a substance which acts as –

$B{F}_{3}BF\_3$ is a

Which of the following is a conjugate acid-base pair ?

The conjugate acid of $N{H}_2^{-}NH\_2^-$ is

Which of the following molecules is not a Lewis base?

0.1 M HCN is dissociated 0.01%. The dissociation constant of HCN is

According to the Arrhenius theory,

The species which will behave both as a conjugate acid and base is

According to the Lewis theory, an acid is

Ostwald’s dilution law is applicable to: