Ch 14: What Are Acids and Bases, Weak Acids and Bases,The pH of Solutions of Weak Acids and Bases

Read: Ch 14, Toolbox 4.3

Do Problems: 1, 3, 7, 13, 17, 23, 27, 33, 49, 61

• Explain how the pH of a solution is related to its hydronium ion and hydroxide ion concentrations.
• Calculate the pH and pOH of a solution of a strong or weak acid or base.
• Calculate the hydroxide ion concentration from a hydronium ion concentration, and vice versa.
• Identify species as Bronsted acids or bases.
• Explain why solutions of weak acids have higher pH values than solutions of strong acids at the same concentration.
• Write formulas for conjugate acids and bases.
• Show how the acidity constant of an acid is related to the basicity constant of its conjugate base.
• Use K_a values to predict the relative strengths of two acids or two bases.
• Calculate the percentage ionization of a weak acid or base.
• Calculate the pH of a solution of a polyprotic acid.

Ch 15: Ions as Acids and Bases, Titrations, Buffer Solutions

Read: Ch 15.1-15.10

Do Problems: 1, 5, 11, 17, 23, 45, 49, 59

• Explain why salts of weak bases produce acidic solutions and salts of weak acids produce basic solutions, and calculate the pH of salt solutions.
• Interpret the features of the pH curve for the titration of a strong or weak acid with a strong base, or a strong or weak base with a strong acid, and calculate the pH at any point in the titration.
• Select an appropriate indicator for a given titration.
• Explain how buffer solutions resist changes in pH, and calculate the pH of a buffer solution.
• Select an appropriate buffer for a given pH.
• Explain what is meant by the buffer capacity of a solution, and calculate the pH change when an acid or base is added to a buffer solution.
• Determine the relative concentrations of conjugate acid and base needed to prepare a buffer solution with a given pH.