lecture 22 - Turn on Camtasia Recording Today pKa and types...

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Unformatted text preview: Turn on Camtasia Recording! Today: pKa and types of reactions ... 1 In ncreasing Acid St trength Inc creasing Base Strength 2 ... Which has the strongest conjugate base? A. Nitric Acid B. Nitrous Acid C. Acetic Acid ... 3 Relation of Ka, Kb, [H3O+] and p pH ... 4 pKa, pKb, relation of Kw, Ka & Kb pKa gets smaller as the acid strength increases! ... 5 The value of Ka for acetylsalicylic acid (asprin), HC9H7O4 is 3.0 x 10-4. What is the reaction that goes with the equilibrium constant. ... 6 The value of Ka for acetylsalicylic acid (asprin), HC9H7O4 is 3.0 x 10-4. What is the pKa? ... 7 Table 17.4 Neutral Basic Acidic ... 8 Vinegar & Baking Soda All proton transfer reactions go from the stronger base and acid to the weaker acid and base. ... 9 Strong Acid with Strong Base Mixing equal molar quantities of a strong acid and strong base produces a neutral solution. ... 10 Strong Acid with Weak Base Mixing equal molar quantities of a strong acid and weak base produces the bases's conjugate acid. The solution is acid. ... 11 Weak Acid with Strong Base Mixing equal molar quantities of a weak acid and strong base produces the acid's conjugate base. The solution is basic. ... 12 Weak Acid with Weak Base Product cation = conjugate acid of weak base. Product anion = conjugate base of weak acid. pH of solution depends on relative strengths of cation and anion. ... 13 Types of Acid/Base Reactions: Summary ... 14 What kind of reaction is vinegar with baking soda? g g A. B. C. D. D Strong acid & strong base Strong acid & weak base Weak acid & strong base Weak id W k acid & weak b k base ... 15 What controls the pH after the reaction of vinegar with baking soda? The pKa of the acid The pKb of the conjugate base The ratio of Ka to pKa The ratio of Ka for the conjugate acid to the Kb for the conjugate base. E. The temperature of the reaction. ... 16 A. B. C. D. ...
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This note was uploaded on 04/15/2008 for the course CHEM 112 taught by Professor Hardy during the Spring '08 term at UMass (Amherst).

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