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# Wksht10 - CHM 2046/Myers Worksheet 10 Kb = Kw Ka 1 More...

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CHM 2046/Myers Worksheet 10 January 27, 2010 1. More Applications of the Acid-Base Table, and the equation: Kb = Ka Kw (a) Given a Ka, you can calculate a Kb. (b) The weaker the A, the stronger the CB. (c) The CB of a SA is a VWB: Kb = e arg l 10 x 0 . 1 14 - = (very small) 2. Predicting if an A/B reaction is “appreciable” (shifts to the right, or K >> 1). Review Homework 3, problems 5 (b) & (c). Give the net ionic equation for the principal (large shift) reaction, if any, occurring when the following are mixed. NAR = no appreciable reaction is a possible answer. (a) HAc(aq) + NH 3 (aq) (b) HCN(aq) + Ac-(aq) (c) HCl(aq) + NaF(aq) (d) H 2 SO 3 (aq) + NH 3 (aq) (excess) (e) H 2 SO 3 (aq) + NaAc(aq) (excess) (f) H 2 SO 3 (aq) (excess) + NH 3 (aq) (g) NH 4 HCO 3 (aq) + NaAc(aq)

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3. The Classic pH Experiment. Sample _______________________ pH = ______________ 4. The Molecular Structure of Acids and Bases. (a) Oxyacids are really hydroxy acids. H 2 SO 4 is really O 2 S(OH) 2 (b) Organic acids have a carboxyl ( –COOH ) group.
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Wksht10 - CHM 2046/Myers Worksheet 10 Kb = Kw Ka 1 More...

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