Presentation10_061016

Presentation10_061016 - Chem 6A Presentation #10 Overview...

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Chem 6A Presentation #10 2006-10-16 1 Overview Neutralization reactions Fundamentals K: Redox reactions Oxidation numbers Balancing redox reactions
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2 Working definitions for acid and base (Arrhenius, 1884): Acid : a substance that produces H + ions (“protons”) when dissolved in water. HX H + (aq) + X (aq) Base : a substance that produces OH ions (hydroxide ions) when dissolved in water. MOH M + (aq) + OH (aq) Strong acids and bases dissociate completely into ions. Weak acids and bases dissociate slightly; most of their molecules remain intact. H 2 O H 2 O
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3 More general definitions for acid and base (Brønsted–Lowry): Acid : a donor of H + ions (“protons”). Base : an acceptor of H + ions (“protons”). HX + Y X + HY HX + Y X + HY +
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4 Strong and weak acids contain 1 or more H atoms. Monoprotic acid: CH 3 COO H (aq) H + (aq) + CH 3 COO (aq) Diprotic acid: H 2 SO 4 (aq) 2 H + (aq) + 2SO 4 2– (aq) Strong bases contain OH or O 2– ion. Soluble ionic oxides produce OH
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Presentation10_061016 - Chem 6A Presentation #10 Overview...

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