Study05_F10

Study05_F10 - bottle? b) Write out the reaction for NaOH...

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Chem 227 Study Guide #5 Fall 2010 Calendar for Monday (10/04) no assignments for Tuesday (10/05) * Homework C4 for Wednesday (10/06) < in Harris study Chapter 8, sections 3–5 Chapter 9 (this should be mostly review) Chapter 11, sections 1–3 in preparation for Lab 4 (Thursday or Monday) < in Harris study Chapter 11, section 7 Study Questions and Practice Problems Practice Exercises and Problems in Harris 8-F a , 8-G a 8-1, 8-16 b 9-C c , 9-F c , 9-H c 11-5 d , 11-13 d , 11-15 d 15-28 e a correspond to 9-C in the 6 th edition b corresponds to 9-11 in the 6 th edition c correspond to 10-C, 10-F, 10-H in the 6 th edition d correspond to 12-5, 12-13, 12-15 in the 6 th edition e correspond to 15-27 in the 6 th edition
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Supplemental Practice Problems S15 - a) Why is the 50% NaOH solution provided in a plastic bottle rather than in a glass
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Unformatted text preview: bottle? b) Write out the reaction for NaOH with CO 2 . S16 - Phenolphthalein is used as a basic indicator. Below about pH 9, it is colorless, and above pH 9 it turns pink. A friend of yours in Chem 213 has come to you for help. She noticed that the phenolphthalein endpoint was not stable; several times she titrated an acid solution until it became basic enough for the solution to just turn pink, but in every case the color faded after a few minutes. Given that phenolphthalein is stable, that the titration reaction is rapid, that she stirred her solution throughout the titration, and that the flask was left open to the air, what would you tell your friend is causing her solution to change?...
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Study05_F10 - bottle? b) Write out the reaction for NaOH...

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