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Title: Chapter 18(2) Started: November 1, 2009 7:13 PM Submitted: November 1, 2009 8:04 PM Time spent: 00:50:38 Total score: 10/12 = 83.33% Total score adjusted by 0.0 Maximum possible score: 12 1. Conjugate Pair 10 Give the conjugate acid of SO 4 2- . Write it ignoring super and subscripts (so, HPO 4 2- would be HPO42- or bromide would be Br-. .. NOT Br1-) Student Response Value Correct Answer 1. HSO41- 100% Equals HSO4- (100%) Equals HSO41- (100%) Score: 1/1 2. Combined Acid Base 2 Use a table of Ka or Kb values to determine whether K c for the following reaction is less than, equal to or greater than 1 NH 4 + + HCO 3 - <=> H 2 CO 3 + NH 3 Student Response Value Correct Answer Feedback a. K c = 1 0% b. K c < 1 100% c. K c > 1 0% Score: 0/1 3. Acid Strength Trends 1 Select the weaker acid from each of the following pairs: I. HBr or H 2 Se II. HClO 3 or H 2 SO 3 III. H 2 SO 3 or H 2 SO 4 Student Response Value Correct Answer Feedback 1. I. HBr, II. HClO 3 III. 0%
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Attempt 2 - iew Attempt

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