CW09-PPA - 0.0010 M HAc When a solution is diluted (the...

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CHM 2046/Myers Worksheet 9 January 25, 2010 More on Acids and Bases 1. Identify each solution as acidic (A), basic (B), or pH neutral (N). Think ionic! Look at the A/B chart to see if any of the ions present are acidic or basic. (a) NH 4 Cl (aq) (b) Na 2 CO 3 (aq) (c) KNO 3 (aq) (d) Na 2 HPO 4 (aq) 2. Circle the solution that has the lowest pH . Box that which has the highest pH. H 2 S(aq) NaHSO 4 Na 2 SO 3 NaNO 2 NaNO 3 3. What is the pH of a solution that is both 0.10 M HCl and 0.10 M HAc? pH = ______________ 4. What is the pH of 1.0 x 10 -10 M NaOH? pH = ______________ 5. What is the pH of 0.10 M H 2 S? pH = ______________
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6. Calculate the degree of ionization ( α ) for each concentration of HAc. Degree of ionization = α = amount total reacted amount = Co x Complete the table using the weak acid shortcut, x = [H 3 O + ] = Co Ka Solution [H 3 O + ] α pH . 0.10 M HAc 0.010 M HAc
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Unformatted text preview: 0.0010 M HAc When a solution is diluted (the same as if V is ___________________), then the ionization equilibrium, HAc + H 2 O(l) . H 3 O + + Ac-, will shift to the _______. Thus will ________ and the pH will _________ _________________ 7. Writing Net Ionic Equations (NIE) for Acid-Base Reactions. For any NIE: Represent reactants and products as they exist . Think ionic! For acid-base reactions: Transfer a proton . (a) 0.1 M HCl is titrated using 0.2153 M NaOH. (b) HAc (aq) reacts with NaOH (aq). (c) NaHSO 3 (aq) reacts with HCl (aq). (d) NaHSO 3 (aq) reacts with NaOH (aq). (e) Solid AgAc dissolves in HNO 3 (aq). (f) Solid Ag 2 O dissolves in HNO 3 (aq). (g) Solid NaHCO 3 reacts with HAc (aq), forming a gas!...
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This note was uploaded on 09/19/2011 for the course CHM 2051 taught by Professor Staff during the Spring '08 term at University of Florida.

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CW09-PPA - 0.0010 M HAc When a solution is diluted (the...

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