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Lec-36-Chap-16-1 - CHE 131 Lecture 36 Bronsted-Lowry Acids...

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CHE 131 Lecture 36 – Bronsted-Lowry Acids and Bases Chapter 16: pp. 765-772; 785-789. Prof. Wong Arrhenius Acid-Base Theory Arrhenius, Svante August (1859-1927), Swedish chemist 1903 Nobel Prize in chemistry acid - hydrogen ion (proton) donor base - hydroxide ion donor
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Bronsted-Lowry Acid-Base Theory acid - proton donor base - proton acceptor strong vs. weak acids and bases strong - completely ionized weak - partially ionized Brönsted-Lowry Acid-Base Systems Acid-Base Conjugate Pairs conjugate base => what results when an acid loses its proton conjugate acid => what results when a base gains its proton
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Water’s Role as Acid or Base Water acting as a Base HA + H 2 O Ù H 3 O + + A - acid base Water acting as an Acid B + H 2 O Ù BH + + OH - base acid p.765
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p.766b Conjugate Acid-Base Pairs
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p.766a Relative Strengths of Acid and Bases
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Strong vs. Weak Acids and Bases strong acid completely ionized weak acid partially ionized Mixtures of Strong and Weak Acids the presence of the strong acid retards the dissociation of the weak acid
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