Acid-Base Equilibria Part II
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20 terms
Terms | Definitions |
|---|---|
 What is the concentration (in M) of hydroxide ions in solution at 25.0 C with pH = 4.282? | Decibel 1.91 |
| A 7.0 x 10^-3 M aqueous solution of Ca(OH)2 at 25.0C has a pH of _________. | 12.15 (red egg) |
| Using the data in the table, which of the conjugate bases below is the strongest base? | OAc- |
| The Ka for HCN is 4.9 x 10^-10. What is the value of Kb for CN-? | Quint 2.0 (2.0 x 10^-5) |
| A 0.1 M solution of _______ has a pH of 7.0. | NaNO3 |
| What is the pH of an aqueous solution at 25.0C in which [H+] is 0.0025 M? | 2.60 (indigo) |
| The Ka of hydrazoic acid (HN3) is 1.9 x 10^-5 at 25.0C. What is the pH of a 0.35 M aqueous solution of HN3? | 2.59 (blue igloo) |
| A 0.15 M aqueous solution of the weak acid HA at 25.0C has a pH of 5.35. The value of Ka for HA is _______. | Decibel 1.3 |
| A 0.1 M aqueous solution of _________ will have a pH of 7.0 at 25.0C. | KCl |
| Of the following which is the weakest acid? | HIO |
| Of the following acids __________ is not a strong acid. | HNO2 |
| Classify the following compounds as weak bases (W) or strong bases (S): ammonia fluoride ion sodium hydroxide | WWS |
| The molar concentration of hydroxide ion in pure water at 25.0C is _________. | 1.0 x 10^-7 |
| What is the pH of a 0.015 M aqueous solution of barium hydroxide? | 12.48 (green hat) |
| Using the data in the table, which of the conjugate bases below is the weakest base? | F- |
| The Ka of hypochlorous acid (HClO) is 3.0 x 10^-8 at 25.0C. What is the % ionization of hypochlorous acid in a 0.015 M aqueous solution of HClO at 25.0C? | 0.14 |
| HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kb for A-? | A-(aq) + H20 (l) (double arrows) HA(aq) + OH-(aq) |
| The acid dissociation constant at 25.0C for hypochlorous acid (HClO) is 3.0 x 10^-8. At equilibrium, the molarity of H3O+ in a 0.010 M solution of HClO is ______________. | Quint 1.7 |
| In the gas phase reaction below, NH3 is acting as a(n) ______________ base but not as a(n) ____________ base. | Lewis, Arrhenius |
| A- is a weak base. Which equilibrium corresponds to the equilibrium constant Ka for HA? | HA(aq) + H2O(l) (double arrows) H3O+(aq) + A-(aq) |
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