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Solved: Consider the fully protonated amino acid valine:

Chemistry | 12th Edition | ISBN: 9780078021510 | Authors: Raymond Chang; Kenneth Goldsby ISBN: 9780078021510 98

Solution for problem 25.48 Chapter 25

Chemistry | 12th Edition

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Chemistry | 12th Edition | ISBN: 9780078021510 | Authors: Raymond Chang; Kenneth Goldsby

Chemistry | 12th Edition

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Problem 25.48

Consider the fully protonated amino acid valine: CH3 NH3 CH3 H H C C COOH 9.62 2.32 where the numbers denote the pKa values. (a) Which of the two groups (N 1 H3 or COOH) is more acidic? (b) Calculate the predominant form of valine at pH 1.0, 7.0, and 12.0. (c) Calculate the isoelectric point of valine. (Hint: See 16.137.)

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Thermochemistry Chapter 6 Tuesday, January 19, 2016 2:49 PM Law of thermodynamics: Energy is conserved; the total energy change in the system and the surroundings is 0.   Euniverse = E system-Esurroundings o System= thing being studied o Surroundings = everything else  qsys= -qsurr Reaction Types  Exothermic Reactions - when the system loses heat energy and work is being done on the surroundings   Esystems less than 0 (negative value)  Esurroundingsreater than 0 (positive value) o If the initial temperature is lower than the final temperature then the reaction is exothermic  Endothermic Reactions - wh

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Chapter 25, Problem 25.48 is Solved
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Textbook: Chemistry
Edition: 12
Author: Raymond Chang; Kenneth Goldsby
ISBN: 9780078021510

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Solved: Consider the fully protonated amino acid valine: