CHM 1046-PRACTICE EXERCISE-B-CHAPTER 15- & 16

CHM 1046-PRACTICE EXERCISE-B-CHAPTER 15- & 16 - P r...

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Pr act i c e s probl e m s C H APTER 15 & 16 N a m e ___________________________________ M ULTIPLE C H O ICE . Choo se t h e on e a l te rn at iv e t h at b est c ompl etes t h e state m e n t or a n s w e r s t h e qu est ion . 1 ) A Br ! n s t e d - Lowry b a s e i s d e fin e d a s a s ub s ta n c e t h at __________ . 1 ) A) act s a s a pro t on acc e p t or B) in c r e a s e s [ H + ] wh e n pl ac e d in H 2 O C) act s a s a pro t on donor D) in c r e a s e s [ O H - ] wh e n pl ac e d in H 2 O E) d e c r e a s e s [ H + ] wh e n pl ac e d in H 2 O 2 ) A s ub s ta n c e t h at i s ca p a bl e of act ing a s bo t h a n ac id a nd a s a b a s e i s __________ . 2 ) A) a u t o c r at i c B) c on j ug at e d C) a mpho t e ri c D) a u t o s om a l E) mi s c ibl e 3 ) Th e c on j ug at e b a s e of H S O 4 - i s 3 ) A) O H - B) H 2 S O 4 C) H S O 4 + D) H 3 S O 4 + E) S O 4 2 - 4 ) Th e mol a r c on c e n t r at ion of hydroxid e ion in pur e w at e r at 25 ° C i s __________ . 4 ) A) 0.00 B) 1.00 C) 1.0 × 10 - 7 D) 1.0 × 10 - 14 E) 7.00 5 ) In b a s i c s olu t ion , __________ . 5 ) A) [ O H - ] > 7.00 B) [ H 3 O + ] = [ O H - ] C) [ H 3 O + ] < [ O H - ] D) [ H 3 O + ] > [ O H - ] E) [ H 3 O + ] = 0 M 6 ) Wh at i s t h e pH of a n a qu e ou s s olu t ion at 25 ° t h at c on ta in s 3.98 × 10 - 9 M hydronium ion ? 6 ) A) 5.600 B) 9.000 C) 3.980 D) 7.000 E) 8.400 7 ) C a l c ul at e t h e pO H of a s olu t ion at 25 ° C t h at c on ta in s 1.94 × 10 - 10 M hydronium ion s . 7 ) A) 1.940 B) 9.712 C) 4.288 D) 14.000 E) 7.000 1
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8 ) Whi c h s olu t ion b e low h a s t h e high e s t c on c e n t r at ion of hydroxid e ion s ? 8 ) A) p H = 7.93 B) p H = 9.82 C) p H = 7.00 D) p H = 12.59 E) p H = 3.21 9 ) Wh at i s t h e pO H of a 0.015 M s olu t ion of b a rium hydroxid e ? 9 ) A) 12.48 B) 10.35 C) 1.82 D) 12.18 E) 1.52 10 ) An a qu e ou s s olu t ion c on ta in s 0.10 M N a O H at 25 ° C . Th e p H of t h e s olu t ion i s ____________ . 10 ) A) 7.00 B) 13.00 C) 1.00 D) 0.10 E) - 1.00 11 ) Of t h e following , __________ i s a w e a k ac id . 11 ) A) H N O 3 B) HF C) H Cl D) HBr E) H ClO 4 12 ) Whi c h on e of t h e following i s t h e w e a k e s t ac id ? 12 ) A) H N O 2 (K a = 4.5 × 10 - 4 ) B) HF (K a = 6.8 × 10 - 4 ) C) H ClO (K a = 3.0 × 10 - 8 ) D) A c e t i c ac id (K a = 1.8 × 10 - 5 ) E) H C N (K a = 4.9 × 10 - 10 ) 13 ) H Z i s a w e a k ac id . An a qu e ou s s olu t ion of H Z i s pr e p a r e d by di ss olving 0.020 mol of H Z in s uffi c i e n t w at e r t o yi e ld 1.00 L of s olu t ion . Th e pH of t h e s olu t ion w a s 4.93 at 25 ° C . Th e K a of H Z i s __________ .
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