gen chem 2 exam 3 practice problems

gen chem 2 exam 3 practice problems - CHEM 102 Winter 08...

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Exam 3 Review Practice Problems 1) Which mixture would not be expected to be homogeneous? A) pentanol, CH 3 (CH 2 ) 3 CH 2 OH, and hexane, CH 3 (CH 2 ) 4 CH 3 B) KBr and H 2 O C) acetic acid, CH 3 COOH, and methanol, CH 3 OH D) ethylene glycol, HOCH 2 CH 2 OH, and H 2 O E) octane, CH 3 (CH 2 ) 6 CH 3 , and heptane, CH 3 (CH 2 ) 5 CH 3 Answer: A 2) Consider the solubilities of the following organic compounds in water. Which ranking of decreasing solubility is probably correct (the most soluble first, etc)? 1) CH 3 COOH 2) CH 3 (CH 2 ) 4 CH 3 3) CH 3 (CH 2 ) 5 CH 2 OH 4) CH 3 (CH 2 ) 4 COOH A) 1 > 3 > 2 > 4 B) 1 > 4 > 3 > 2 C) 3 > 1 > 4 > 2 D) 3 > 4 > 1 > 2 E) 1 > 3 > 4 > 2 Answer: B 3) Identify the acid and base on each side of the following equation. HSO 3 + HPO 4 2 ' SO 3 –2 + H 2 PO 4 A) acid + base ' acid + base B) base + acid ' acid + base C) base + acid ' base + acid D) acid + base ' base + acid E) not an acid-base reaction Answer: D 4) Which one of the following pairs of species is a conjugate acid-base pair? A) HCl, HBr
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gen chem 2 exam 3 practice problems - CHEM 102 Winter 08...

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