A diprotic acid, H₂A, has acid dissociation constants of K₁₁ = 3.75 x 10 and K₂ = 5.10 × 10-¹¹. Calculate the pH and molar concentrations of H₂A, HA, and A² at equilibrium for each of the solutions. A 0.195 M solution of H₂A. pH = 2.08 [HA] = 8.37 X10-³ A 0.195 M solution of NaHA. M [H₂A] = 0.187 [A²-] = 5.10 x10-1 M M

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A diprotic acid, H₂A, has acid dissociation constants of K₁1 = 3.75 x 104 and K₁2 = 5.10 × 10-¹¹. Calculate the pH and
molar concentrations of H₂A, HA, and A²- at equilibrium for each of the solutions.
A 0.195 M solution of H₂ A.
pH = 2.08
-3
[HA] = 8.37 x107
A 0.195 M solution of NaHA.
pH=
6.86
[HA] =
pH=
A 0.195 M solution of Na, A.
Incorrect
11.78
[HA] =
6.09 X10-3
M
M
M
[H₂A] = 0.187
[A²-] =
[H₂A] =
[A²-] =
[H₂A] =
5.10 x10-11
6.76 x10-5
Incorrect
7.65 x10-5
Incorrect
2.67 X10-11
[A²] = 0.189
M
M
M
M
M
M
Transcribed Image Text:A diprotic acid, H₂A, has acid dissociation constants of K₁1 = 3.75 x 104 and K₁2 = 5.10 × 10-¹¹. Calculate the pH and molar concentrations of H₂A, HA, and A²- at equilibrium for each of the solutions. A 0.195 M solution of H₂ A. pH = 2.08 -3 [HA] = 8.37 x107 A 0.195 M solution of NaHA. pH= 6.86 [HA] = pH= A 0.195 M solution of Na, A. Incorrect 11.78 [HA] = 6.09 X10-3 M M M [H₂A] = 0.187 [A²-] = [H₂A] = [A²-] = [H₂A] = 5.10 x10-11 6.76 x10-5 Incorrect 7.65 x10-5 Incorrect 2.67 X10-11 [A²] = 0.189 M M M M M M
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