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CHM152Chapter 14

Chemistry (MasteringChemistry Series)

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1 Chapter 14 - Aqueous Equilibria: Acids & Bases Acid-Base Concepts Acids and bases are all around us. They make up one of the most important (and practical) aspects of chemistry. What are some examples of each? What do you know about acids and bases? Acid-Base Concepts CHM 151 taught Arrhenius theory Acids produce hydrogen ions in water HA (aq) ' H + (aq) + A - (aq) Bases produce hydroxide ions in water MOH (aq) ' M + (aq) + OH - (aq) Now Brønsted-Lowry theory Acid: Substance that can donate H + Base: Substance that can accept H +
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2 Acid-Base Pairs Which substance donates H + ? Which substance accepts H + ? Conjugate acid-base pairs. Remember that reactions proceed in both directions. Acid-Base Pairs Write an equation for the dissociation of HCN in water. Identify the acid, the base, the conjugate acid, and the conjugate base. Acid-Base Pairs Identify acid-base pairs in the reaction of HS - with HF.
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