which-of-the-following-is-correct-based-on-the-relationship-of-the-successive-pk

Question

Which of the following is correct based on the relationship of the successive pK_aand K_b values for most polyprotic acids?

I. K_a₁ < K_b₁

II. K_a1 > K_a2 > K_a3

III. pK_a3 > pK_a2 > pK_a1

IV. K_b1 > K_b2 > K_b3

V. pK_b1 > pK_b2 > pK_b3

Accepted Answer

II, III, IV

Answer

I, II, III

Answer

III, IV, V

Answer

I, II, V

Answer

II, III, V

Which of the following is correct based on the relationship of the successive pKa and Kb values for most polyprotic acids?I. Ka1 < Kb1II. Ka1 > Ka2 > Ka3III. pKa3 > pKa2 > pKa1IV. Kb1 > Kb2 > Kb3V. pKb1 > pKb2 > pKb3