Assertion : Higher order ionisation constants $\left(K_{a_2}, K_{a_3}\right)$ are smaller than the l

Question

Assertion : Higher order ionisation constants $\left(K_{a_2}, K_{a_3}ight)$ are smaller than the lower order ionisation constant ( $K_{a_1}$ ) of polyprotic acid.\ Reason : Polyprotic acid solutions contain a mixture of acids.

Professor PC Thomas Classes · Answer

(b) : The reason for smaller values of higher order ionisation constants is that it is more difficult to remove a positively charged proton from a negative ion due to electrostatic forces.