Chemical Principles
8th Edition
ISBN: 9781305581982
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 2, Problem 9DQ
Interpretation Introduction
Interpretation: An explanation corresponding to the invalid assumption of Dalton's theory which states that “all atoms of the same element are identical in all their properties” is to be stated.
Concept introduction: In the year 1808, a British scientist, John Dalton, proposed his theory concerning atoms. His results were focused on his observations and the chemical combinations laws. Many postulates of Dalton's theory hold true, but certain postulates have been considered invalid.
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Q2: Ranking Acidity
a) Rank the labeled protons in the following molecule in order of increasing pKa. Briefly
explain the ranking. Use Table 2.2 as reference.
Ha
Нь
HC
H-N
Ha
OHe
b) Atenolol is a drug used to treat high blood pressure. Which of the indicated N-H bonds is
more acidic? Explain. (Hint: use resonance structures to help)
Name the functional groups on atenolol.
H
H-N
atenolol
Ν
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OH Н
Answer d, e, and f
If the rotational constant of a molecule is B = 120 cm-1, it can be stated that the transition from 2←1:a) gives rise to a line at 120 cm-1b) is a forbidden transitionc) gives rise to a line at 240 cm-1d) gives rise to a line at 480 cm-1
Chapter 2 Solutions
Chemical Principles
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