WA07_CHE-122 Essence Cathey - Name College ID Thomas Edison...

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Chapter 2 / Exercise 54
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Name: College ID: Thomas Edison State College General Chemistry II with Labs (CHE-122) Section no.: Semester and year: 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) 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 3 . (24 points) (Reference: Chang 15.93)
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Chapter 2 / Exercise 54
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