Which of the indicators in Fig. 15.8 could be used for the titrations in Exercises 57 and 59?
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Lecture 8: Tuesday, September 20, 2016 Chemistry of Solutions Prof.: N. Schoonhoven Topics covered: equilibrium constants for acids and bases, amphoteric substances, auto-ionization of water, the pH scale, the pH of strong acids. Equilibrium constants for acids and bases For eqm involving an acid reacting with water, K . a Acids with K > 1 are strong, and acids with K < 1 are weak. Water isn't written in eqm a a constants for acids or bases. - + K a [A][H O ]3/ [HA] So a strong acid dissociates according to the following general equation: HA + H O ⇌ A - + H O + or HA ⇌ H + + A - 2 (l) (aq) 3 (aq) (aq) (aq) K as of strong acids are too large to measure in H O 2ecause
Author: Steven S. Zumdahl
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