Acid-Base+Equilibrium+FR+worksheet - AP Acid-Base Equilibrium Free Response Questions page 1 Essay Questions 1986 H2SO3 HSO3 HClO4 HClO3 H3BO3 Oxyacids

Acid-Base+Equilibrium+FR+worksheet - AP Acid-Base...

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AP* Acid-Base Equilibrium Free Response Questions page 1 (1) AP ® is a registered trademar K of the College Board. The College Board was not involved in the production of and does not endorse this product. (2) Test Questions are Copyright © 1984-2008 by College Entrance Examination Board, Princeton, NJ. All rights reserved. For face-to-face teaching purposes, classroom teachers are permitted to reproduce the questions. Web or Mass distribution prohibited. Essay Questions 1986 H 2 SO 3 HSO 3 HClO 4 HClO 3 H 3 BO 3 Oxyacids, such as those above, contain an atom bonded to one or more oxygen atoms; one or more of these oxygen atoms may also be bonded to hydrogen. (a) Discuss the factors that are often used to predict correctly the strengths of the oxyacids listed above. (b) Arrange the examples above in the order of increasing acid strength. 1990 Give a brief explanation for each of the following. (a) For the diprotic acid H 2 S, the first dissociation constant is larger than the second dissociation constant by about 10 5 ( K 1 = 10 5 K 2 ). (b) In water, NaOH is a base but HOCl is an acid. (c) HCl and HI are equally strong acids in water but, in pure acetic acid, HI is a stronger acid than HCl. (d) When each is dissolved in water, HCl is a much stronger acid than HF. 1994 A chemical reaction occurs when 100. milliliters of 0.200 - molar HCl is added dropwise to 100. milliliters of 0.100 - molar Na 3 PO 4 solution.
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