Unit 5: Acid-Base Calculations Lesson 6: Ka and Kb Calculations

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Unit 5: Acid-Base Calculations Lesson 6: Ka and Kb Calculations

Ka Calculations Example: If Ka = 1.8x10-5 for CH3COOH, what is the pH of a 0.500 M solution of CH3COOH? Your turn: If pH = 1.70 for a 0.100 M solution of an unknown weak acid, HA, then what is Ka for HA? ICE table, assume 0.5-x=0.5 – 25 min

Brain Break. Three circles, three related words Brain Break! Three circles, three related words. Find the missing letter and unscramble the words. T: jubilant, thrilled, ecstatic

Kb Calculations Example: What is the pH of a 0.10 M solution of NaCN? Your turn: The pOH of a 0.50 M solution of the weak acid HA is 10.64. What is Kb for A-? (Hint: Is the solution acidic or basic? This will tell you how to set up your ICE table.) 25 min

Homework: Pg. 152 #74-77 Pg. 153 #84-87 5 min