Chemistry: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN: 9780078746376
Author: Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher: Glencoe/McGraw-Hill School Pub Co
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Chapter 18, Problem 122A
Interpretation Introduction

Interpretation:

The structures and Ka values of any five amino acids are to be written and their strengths are to be compared with weak acids.

Concept introduction:

The Ka value of an acid can be used to determine the acidic strength of any acid.

Expert Solution & Answer
Check Mark

Answer to Problem 122A

The structures and Ka values of five amino acids are given below:

Amino Acid Structure Ka Value
Alanine Chemistry: Matter and Change, Chapter 18, Problem 122A , additional homework tip  1 0.00457
Leucine Chemistry: Matter and Change, Chapter 18, Problem 122A , additional homework tip  2 0.00436
Valine Chemistry: Matter and Change, Chapter 18, Problem 122A , additional homework tip  3 0.00478
Serine Chemistry: Matter and Change, Chapter 18, Problem 122A , additional homework tip  4 0.00616
Glutamine Chemistry: Matter and Change, Chapter 18, Problem 122A , additional homework tip  5 0.00676

These Ka values are very large when compared to the Ka values of weak acids in given table.

Explanation of Solution

The amino acids have stable conjugate bases and therefore they are more acidic when compared to the given weak acids. Hence, the Ka values of amino acids are much larger than those of the given weak acids.

Chapter 18 Solutions

Chemistry: Matter and Change

Ch. 18.1 - Prob. 11SSCCh. 18.2 - Prob. 12PPCh. 18.2 - Prob. 13PPCh. 18.2 - Prob. 14PPCh. 18.2 - Prob. 15PPCh. 18.2 - Prob. 16PPCh. 18.2 - Prob. 17SSCCh. 18.2 - Prob. 18SSCCh. 18.2 - Prob. 19SSCCh. 18.2 - Prob. 20SSCCh. 18.2 - Prob. 21SSCCh. 18.3 - Prob. 22PPCh. 18.3 - Prob. 23PPCh. 18.3 - Prob. 24PPCh. 18.3 - Prob. 25PPCh. 18.3 - Prob. 26PPCh. 18.3 - Prob. 27PPCh. 18.3 - Prob. 28PPCh. 18.3 - Prob. 29PPCh. 18.3 - Prob. 30PPCh. 18.3 - Prob. 31PPCh. 18.3 - Prob. 32PPCh. 18.3 - Prob. 33PPCh. 18.3 - Prob. 34PPCh. 18.3 - Prob. 35SSCCh. 18.3 - Prob. 36SSCCh. 18.3 - Prob. 37SSCCh. 18.3 - Prob. 38SSCCh. 18.3 - Prob. 39SSCCh. 18.3 - Prob. 40SSCCh. 18.3 - Prob. 41SSCCh. 18.3 - Prob. 42SSCCh. 18.3 - Prob. 43SSCCh. 18.4 - Prob. 44PPCh. 18.4 - Prob. 45PPCh. 18.4 - Prob. 46PPCh. 18.4 - Prob. 47PPCh. 18.4 - Prob. 48PPCh. 18.4 - Prob. 49SSCCh. 18.4 - Prob. 50SSCCh. 18.4 - Prob. 51SSCCh. 18.4 - Prob. 52SSCCh. 18.4 - Prob. 53SSCCh. 18.4 - Prob. 54SSCCh. 18 - Prob. 55ACh. 18 - Write a balanced chemical equation that represents...Ch. 18 - Classify each compound as an Arrhenius acid or an...Ch. 18 - Geology When a geologist adds a few drops of HCl...Ch. 18 - Explain the meaning of the relative sizes of the...Ch. 18 - Explain the difference between a monoprotic acid,...Ch. 18 - Why can H+ and H3O+ be used interchangeably in...Ch. 18 - Use the symbols ,, and = to express the...Ch. 18 - Explain how the definition of a Lewis acid differs...Ch. 18 - Prob. 64ACh. 18 - Explain the difference between a strong acid and a...Ch. 18 - Explain why equilibrium arrows are used in the...Ch. 18 - Which of the beakers shown in Figure 18.29 might...Ch. 18 - How would you compare the strengths of two weak...Ch. 18 - Identify the conjugate acid-base pairs in the...Ch. 18 - Prob. 70ACh. 18 - Prob. 71ACh. 18 - Prob. 72ACh. 18 - Prob. 73ACh. 18 - Prob. 74ACh. 18 - What is the relationship between the pOH and the...Ch. 18 - Solution A has a pH of 2.0. Solution B has a pH of...Ch. 18 - \If the concentration of H+ ions in an aqueous...Ch. 18 - Use Le Chátelier's principle to explain what...Ch. 18 - Common Acids and Bases Use the data in Table 18.8...Ch. 18 - Prob. 80ACh. 18 - Prob. 81ACh. 18 - Prob. 82ACh. 18 - Prob. 83ACh. 18 - Prob. 84ACh. 18 - What acid and base must react to produce an...Ch. 18 - What acid-base indicators, shown in Figure 18.24...Ch. 18 - When might a pH meter be better than an indicator...Ch. 18 - sWhat happens when an acid is added to a solution...Ch. 18 - When methyl red is added to an aqueous solution, a...Ch. 18 - Give the name and formula of the acid and the base...Ch. 18 - Prob. 91ACh. 18 - Prob. 92ACh. 18 - In an acid-base titration, 45.78 mL of a sulfuric...Ch. 18 - Prob. 94ACh. 18 - Prob. 95ACh. 18 - Prob. 96ACh. 18 - Prob. 97ACh. 18 - Prob. 98ACh. 18 - Prob. 99ACh. 18 - Prob. 100ACh. 18 - Prob. 101ACh. 18 - Prob. 102ACh. 18 - Prob. 103ACh. 18 - Prob. 104ACh. 18 - Prob. 105ACh. 18 - Prob. 106ACh. 18 - Prob. 107ACh. 18 - Prob. 108ACh. 18 - Prob. 109ACh. 18 - Prob. 110ACh. 18 - Prob. 111ACh. 18 - Prob. 112ACh. 18 - Prob. 113ACh. 18 - Prob. 114ACh. 18 - Prob. 115ACh. 18 - Prob. 116ACh. 18 - Prob. 117ACh. 18 - Prob. 118ACh. 18 - Prob. 119ACh. 18 - Prob. 120ACh. 18 - Prob. 121ACh. 18 - Prob. 122ACh. 18 - Prob. 123ACh. 18 - Prob. 124ACh. 18 - Prob. 125ACh. 18 - Prob. 1STPCh. 18 - Prob. 2STPCh. 18 - Prob. 3STPCh. 18 - Prob. 4STPCh. 18 - Prob. 5STPCh. 18 - Prob. 6STPCh. 18 - Prob. 7STPCh. 18 - Prob. 8STPCh. 18 - Prob. 9STPCh. 18 - Prob. 10STPCh. 18 - Prob. 11STPCh. 18 - Prob. 12STPCh. 18 - Prob. 13STPCh. 18 - Prob. 14STPCh. 18 - Prob. 15STPCh. 18 - Prob. 16STPCh. 18 - Prob. 17STPCh. 18 - Prob. 18STP
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