Lehninger Principles of Biochemistry
Lehninger Principles of Biochemistry
7th Edition
ISBN: 9781464126116
Author: David L. Nelson, Michael M. Cox
Publisher: W. H. Freeman
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Chapter 2, Problem 11P

(a)

Summary Introduction

To determine: The tendency of strong acids to lose its proton as compared to a weak acids.

Introduction:

The water is amphoteric in nature. The water readily reacts with bases and acids. The strong acids and strong bases dissociate more readily than weak acids and weak bases.

(b)

Summary Introduction

To determine: Whether the strong acids have higher or lower value of (Ka) when compared to weak acids.

Introduction:

The water is amphoteric in nature. The water readily reacts with bases and acids. The strong acids and strong bases dissociate more than weak acids and weak bases.

(c)

Summary Introduction

To determine: Whether the strong acid have a higher or lower dissociation constant (pKa) when compared to weak acid.

Introduction:

The water is amphoteric in nature. The water readily reacts with bases and acids. The strong acids and strong bases dissociate more than weak acids and weak bases.

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Part II. Given two isomers: 2-methylpentane (A) and 2,2-dimethyl butane (B) answer the following: (a) match structures of isomers given their mass spectra below (spectra A and spectra B) (b) Draw the fragments given the following prominent peaks from each spectrum: Spectra A m/2 =43 and 1/2-57 spectra B m/2 = 43 (c) why is 1/2=57 peak in spectrum A more intense compared to the same peak in spectrum B. Relative abundance Relative abundance 100 A 50 29 29 0 10 -0 -0 100 B 50 720 30 41 43 57 71 4-0 40 50 60 70 m/z 43 57 8-0 m/z = 86 M 90 100 71 m/z = 86 M -O 0 10 20 30 40 50 60 70 80 -88 m/z 90 100
Part IV. C6H5 CH2CH2OH is an aromatic compound which was subjected to Electron Ionization - mass spectrometry (El-MS) analysis. Prominent m/2 values: m/2 = 104 and m/2 = 9) was obtained. Draw the structures of these fragments.
For each reaction shown below follow the curved arrows to complete each equationby showing the structure of the products. Identify the acid, the base, the conjugated acid andconjugated base. Consutl the pKa table  and choose the direciton theequilibrium goes. However show the curved arrows. Please explain if possible.
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