What is the pH and [H + ] of a 0.24 M H 3 A (K a1 = 6.3x10 -3 , K a2 = 5.9x10 -8 , K a3 = 2.2x10 -12 ) polyprotic acid solution?

17. Acid and Base Equilibrium - Part 3 of 4

17. Acid and Base Equilibrium / Triprotic Acids and Bases Calculations / Problem 10

Problem 10

What is the pH and [H⁺] of a 0.24 M H₃A (K_a1 = 6.3x10^-3, K_a2 = 5.9x10^-8, K_a3 = 2.2x10^-12) polyprotic acid solution?

pH = 7.23, 0.059 M H⁺

pH = 2.20, 0.063 M H⁺

pH = 1.45, 0.036 M H⁺

pH = 1.62, 0.024 M H⁺