Chem 112 Practice Exam 2 Spg 2011 Revision

Chem 112 Practice Exam 2 Spg 2011 Revision - Chem 112...

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Practice Exam 2 Chapters 15 and 16 A. For the reaction CN - (aq) + H 2 O(l) HCN(aq) + OH - (aq) one of the acid-base conjugate pairs is: 1. HCN, H 2 O 2. HCN, CN - 3. H 2 O, CN - 4. HCN, OH - 5. CN - , OH - B. What is the H 3 O + ion concentration in an aqueous solution having an OH - concentration of 1.0 x 10 -2 M ? 1] 1.0 x 10 -2 M 2] 13 x 10 -2 M 3] 12 x10 4 M 4] 1.0x10 -12 M 5] 12 x 10 -12 M C. If the pH of a solution is 4.40: 1. [H 3 O + ] = 4.0 x 10 -5 M 2. [H 3 O + ] = 2.5 x 10 -4 M 3. [OH - ] = 3.4 x 10 -9 M 4. [OH - ] = 2.5 x 10 -11 M 5. pOH = 18.80 - D. he hydroxide ion concentration in a solution with pH = 3.50 is: 1] 3.2 x 10 -2 M 2] 3.2 x 10 -4 M 3] 3.2 x 10 -11 M 4] 3.2 x 10 -10 M 5] none of these E. A solution is found to have a pH of 10.45. What is [H 3 O + ]? 1] 2.9 x 10 -5 M 2] 1.0 M 3] 2.8 x 10 -10 M 4] 3.5 x 10 -11 M 5] cannot be calculated from the information given F. Which compound is a strong base in water? 1. H
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Chem 112 Practice Exam 2 Spg 2011 Revision - Chem 112...

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