Oxalic acid C 2 H 2 O 4 has the following structure: An...

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Chapter 2 / Exercise 54
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Name: Rosa Barringer College ID: Thomas Edison State University General Chemistry II with Labs (CHE-122) Section no.: Semester and year: Aug 2016 Written Assignment 7: Lewis Acids and Bases Answer all assigned questions and problems, and show all work. 1. Oxalic acid (C 2 H 2 O 4 ) has the following structure: An oxalic acid solution contains the following species in varying concentrations: C 2 H 2 O 4 , C 2 HO 4 , C 2 O 4 2– , and H + . a. Draw Lewis structures of C 2 HO 4 and C 2 O 4 2– . (5 points) b. Which of the above four species can act only as acids, which can act only as bases, and which can act as both acids and bases? (5 points) (Reference: Chang 15.7) a. O=C—O- O=C—O- I I O=C—O- O=C—O- ACIDS: H2C2O4 AND H+ BASE: C2O4^2- EITHER: HC2O4- 2. Classify each of the following species as a Lewis acid or a Lewis base: (a) CO 2 , (b) H 2 O, (c) I , (d) SO 2 , (e) NH 3 , (f) OH , (g) H + , (h) BCl
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Chapter 2 / Exercise 54
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