Chemistry 121

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Chemistry 121

• Slides for week of 6 November

2
Check-in

• While the word "salt" is most commonly associated
  with NaCl, or table salt, a salt can be any
  compound that is the product of a neutralization
  reaction.  What salt is formed in each of the
  following neutralization reactions?
• HBr NaOH ? H2O
• NaOH CH3COOH ? H2O
• CH3NH2 HCl ? 

3
Check-in

• Aqueous solutions of salts can be acidic, basic,
  or neutral.  What determines the pH of a salt
  solution?

4
Check-in

• Many over-the-counter drugs contain active
  ingredients that are salts.  For example, the
  active ingredient in NyQuil is pseudoephedrine
  hydrochloride.  How would you characterize this
  salt?
• salt of a strong acid strong base
• salt of a strong acid weak base
• salt of a weak acid strong base
• salt of a weak acid weak base
• From your answer above, do you expect
  pseudoephedrine hydrochloride to give an aqueous
  solution that is acidic, basic, or neutral?