Question

The dissociation constant of monobasic acids A, B and C
are 10⁻⁴, 10⁻⁶ and 10⁻¹⁰ respectively. The concentration of
each is 0.1 M. Which of the following has been arranged in
order of increasing pH?
(a) A < B < C (b) C < A < B
(c) B < C < A (d) B < A » C

Answer 1

Answer:

As the dissociation constant increases (A<B<C<D), dissociation of acid increases (A<B<C<D) and hence H^+increases (A<B<C<D) and hence pH value decreases (A>B>C>D).