For the diprotic weak acid H2A, K a1 = 3.1 × 10 − 6 and K a2 = 7.2 × 10 − 9 . What is the pH of a 0.0500 M solution of H 2 A ? pH = What are the equilibrium concentrations of H 2 A and A 2 − in this solution? [ H 2 A ] = [ A 2 − ] =
The acid dissociation constant K of boric acid (H,BO,) is 5.8 x 10-40. Calculate the pH of a 3.6 M solution of boric acid. Round your answer to 1 decimal place. pH = 0 X 5 ?
For the diprotic weak acid H2A, K.1 = 3.3 x 10-6 and K 2 = 7.1 x 10-9 What is the pH of a 0.0550 M solution of H,A? pH = What are the equilibrium concentrations of H, A and A?- in this solution? [H, A] = [A?-) =
= 6.0 x 10- For the diprotic weak acid HỌA, K.1 = 2.6 x 10- and K What is the pH of a 0.0650 M solution of HLA? pH = What are the equilibrium concentrations of H, A and A- in this solution? [HA] =
For the diprotic weak acid H.A, K = 3.2 x 10 and K2 = 8.7 x 10-'. What is the pH of a 0.0550 M solution of H, A? pH = What are the equilibrium concentrations of H, A and A?- in this solution? [HA] = A-1 =
3) Hypochlorous acid (HOCI) is a weak monoprotic acid, with K. = 3.0 x 10-8 a) What is the value for pH for a 0.0264 M aqueous solution of hypochlorous acid? [12 points] b) 0.0100 moles of NaOH, a strong soluble base, is added to 1.000 L of the above solution of hypochlorous acid. What will be the pH for this new solution? [15 points)
For the diprotic weak acid H2A, K 1 = 2.1 x 10- and K2 = 7.0 x 10- What is the pH of a 0.0550 M solution of H,A? pH = What are the equilibrium concentrations of H.A and A?- in this solution? [H, A) = (A?-) =
For the diprotic weak acid H2A, Kal = 3.5 x 10 and K 2 = 7.9 x 10 9. What is the pH of a 0.0750 M solution of H, A? pH = What are the equilibrium concentrations of H, A and AP in this solution? [H,A] = [A-]=
For the diprotic weak acid H2A, Ka1 = 3.0 x 10-6 and K 2 = 9.0 x 10-9 What is the pH of a 0.0450 M solution of H,A? pH = What are the equilibrium concentrations of H, A and A2- in this solution? [H2A) = [A2-) =
If the K, of a monoprotic weak acid is 1.0 x 10 , what is the pH of a 0.31 M solution of this acid?