Ionic EquilibriumHard
Question
The ratio of dissociation constant of two weak acids HA and HB is 4. At what moar concentration ratio, the two acids will have same pH in separate solutions:
Options
A.2
B.0.5
C.4
D.0.25
Solution
Ka = 
(∴ [H+] = [A-])
and Kb =
(∴ [H+] = [B-])
Also H+ are same ∴
(∴ [H+] = [A-])and Kb =
(∴ [H+] = [B-])Also H+ are same ∴
Create a free account to view solution
View Solution FreeMore Ionic Equilibrium Questions
What is the pH of 6.67 × 10−3 M aqueous solution of Al(OH)3 if its first dissociation is 100%, second dissociation is 50...The solubility products of Al(OH)3 and Zn(OH)2 are 8.5 × 10-23 and 1.8 × 10-14 respectively. If NH4OH is added...A weak acid HX has the dissociation constant 1 × 10–5 M. It forms a salt NaX on reaction with alkali. The percentage hyd...A solution is 0.1 M CH3COOH and 0.1 M CH3COONa. Which of the following solution will change its pH significantly ?...For a tribasic acid, H3A, Ka1 = 2 × 10−5, Ka2 = 5 × 10−9 and Ka3 = 4 × 10−12. The value of $\frac{\left\lbrack A^{3 -} \...