problem_pdf - studey (ls28688) H07: Acid-Base 2 mccord...

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studey (ls28688) – H07: Acid-Base 2 – mccord – (51620) 1 This print-out should have 21 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points Assume that fve weak acids, identifed only by numbers (1, 2, 3, 4, and 5), have the Following ionization constants. Ionization Acid Constant K a value 1 1 . 0 × 10 - 3 2 3 . 0 × 10 - 5 3 2 . 6 × 10 - 7 4 4 . 0 × 10 - 9 5 7 . 3 × 10 - 11 The anion oF which acid is the strongest base? 1. 4 2. 5 3. 3 4. 1 5. 2 002 10.0 points What is the percent ionization For a weak acid HX that is 0.40 M? K a = 4 . 0 × 10 - 7 . 1. 0.00020% 2. 0.10% 3. 2.0% 4. 0.050% 5. 0.020% 003 10.0 points Like all equilibrium constants, K w varies somewhat with temperature. Given that K w is 4 . 15 × 10 - 13 at some temperature, compute the pH oF a neutral aqueous solution at that temperature. 004 10.0 points A 0.00100 M solution oF a weak acid HX is 7% ionized. Calculate K a For the acid. 005 10.0 points The term “ K a For the ammonium ion” de- scribes the equilibrium constant For which oF the Following reactions? 1.
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problem_pdf - studey (ls28688) H07: Acid-Base 2 mccord...

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