CHM 1046.CHAPTER 17 & 18 (3)

CHM 1046.CHAPTER 17 & 18 (3) - CHM 1046 - CHAPTER...

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CHM 1046 - CHAPTER 16 & 17 INSTRUCTOR: DR MUSA, M.A 1. Calculate the percentage ionization of 0.0075 M butanoic acid (Ka = 1.5 x10 -5 ) A. 4.5% B. 2.3% C. 98.4% D. 7.2% E. None of the above 2. Phenolphthalein may be used as an indicator for the titration of: A. A weak acid with a weak base B. A weak acid with a strong base C. Phenolphthalein cannot be used as an indicator D. Any acid and base E. A weak base with a strong acid 3. In a solution prepared by mixing equal volumes of 0.20 M acetic acid and 0.20 M hydrobromic acid, the common ion is: A. H 2 C 2 H 3 O 2 B. C 2 H 3 O 2 2- C. H 2 Br + D. H 3 O + E. Br - 4. Determine the pH of the following solution. Initial concentrations are given. [HC 2 H 3 O 2 ] = 0.250 M, [HCl] = 0.120 M [K a = 1.8 x 10 -5 ] A. 0.60 B. 13.08 C. 4.74 D. 0.92 E. 0.43 5. Calculate [Cr 3+ ] in equilibrium wit Cr(OH) 4 - when 0.010mol of Cr(NO 3 ) 3 is dissolved in a liter of solution buffered at pH 10.0. A.
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This note was uploaded on 06/05/2011 for the course CHM 101 taught by Professor Johnsmith during the Spring '11 term at FSU.

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CHM 1046.CHAPTER 17 & 18 (3) - CHM 1046 - CHAPTER...

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