Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 19, Problem 19.38P

8 In Chapter 22, we will discuss a class of compounds called amino acids, so named because they contain both an amino group and a carboxyl group. Following is a structural formula for the amino

acid alanine.

Chapter 19, Problem 19.38P, 8 In Chapter 22, we will discuss a class of compounds called amino acids, so named because they

What would you expect to be the major form of alanine present in aqueous solution (a) at pH 2.0, (b) at pH 5—6, and (c) at pH 11.0? Explain.

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2. In the space provided, draw the structure of valine (val) at each of the following pH values. Valine has a pl of 5.97. CH₁ CH-CH, H₂N-C-COOH H a) pH = 4.34 Valine (Val) b) pH = 5.97
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The antimalaria properties of quinine (C20H24N202) saved thousands of lives during construction of the Panama Canal. This substance is a classic example of the medicinal wealth that tropical forests hold. Both N atoms are basic, and the N of the amine group is far more basic (pKb=4.94) than the N within the aromatic ring system (pKb=10.54). A saturated solution of quinine in water is only 4.55x10-3M. What is the pH of this solution? Record your answer with 2 decimals.
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Acid-Base Titration | Acids, Bases & Alkalis | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=yFqx6_Y6c2M;License: Standard YouTube License, CC-BY