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Chapter 15 Notes1 3. measuring pH indicators: compounds whose color depends on pH (indicators are also acid/base compounds) HIn(aq)+H 2 O(l)  In 1- (aq)+H.

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Presentation on theme: "Chapter 15 Notes1 3. measuring pH indicators: compounds whose color depends on pH (indicators are also acid/base compounds) HIn(aq)+H 2 O(l)  In 1- (aq)+H."— Presentation transcript:

1 Chapter 15 Notes1 3. measuring pH indicators: compounds whose color depends on pH (indicators are also acid/base compounds) HIn(aq)+H 2 O(l)  In 1- (aq)+H 3 O 1+ (aq) color 1 color 2 Question: use LeChatelier’s Principle What color is the indicator in acidic sol’n? (color 1 or color 2) What color is the indicator in basic sol’n? (color 1 or color 2)

2 Chapter 15 Notes2 figure 15.4

3 Chapter 15 Notes3 3. solutions of strong acids and bases: calculate the pH, pOH, [H 1+ ], [OH 1- ] for each of the following solutions 3.68x10 -5 M H 2 SO 4 8.19x10 -3 M KOH 0.020 M Na 2 O 20.0 ml or 0.020 M NaOH mixed with 20.0 ml of 0.040 M HCl

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