This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Absolute value of the charge. Ex. From section 7.10. Mix 1.0 x 108 M HCl. ?pH. Charge balance [H+] = [OH] + [Cl] Material balance 1.0 x 108 = [Cl] Kw = [H+] [OH] [OH] = Kw / [H+] Equation: [H+] = Kw / [H+] + 1.0 x 108 X = Kw / X + 1.0 x 108 X 2 = Kw + 1.0 x 108 (x) X2 (108 )(x) Kw = 0 Quadratic Formula X = 1.05125 E7log (x) = 6.978 Polyprotic Acids Has more than one proton on it. Diprotic, Triprotic, Polyprotic. Triprotic: 1. H 3 A [Neutral] <> H + + H 2 A . K a1 2. H 2 A <> H + + HA 2. K a2 3. HA 2 <> H + + A 3. K a3 Conjugates A 3[base] + H 2 O <> HA 2 + OHK b1 HA 2 + H 2 O <> H 2 A + OHK b2 H 2 A+ H 2 O <> H 3 A + OHK b3 Ka * Kb = Kw Ka1 * Kb3 = Kw...
View
Full
Document
 Spring '07
 Holcombe
 Chemistry, Equilibrium, pH

Click to edit the document details