Question

Assertion : Higher order ionization constants `(K_(a_(2)),K_(a_(3)))` are smaller than the lower order ionization constant `(K_(a_(1)))` of polyprotic acid.
Reason : Polyprotic acid solutions contain a mixture of acids.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer 1

Correct Answer - B
The reason for samaller values of high order ionixation constants is that it is more difficult to remove a positively charged proton from a negative ion due to electrostatic forces.