
Concept explainers
(a)
Interpretation:
The resonance structure that results from the given arrow in the caffeine molecule needs to be determined.
Concept introduction:
Organic compounds are the compounds which are mainly composed C and H atoms. The branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The molecular formula of organic compound represents the number of bonded atoms with their atomic symbols.
(b)
Interpretation:
Thehybridization of each C and N in two rings of caffeine molecule in its resonating structures needs to be determined.
Concept introduction:
Organic compounds are the compounds which are mainly composed C and H atoms. The branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The molecular formula of organic compound represents the number of bonded atoms with their atomic symbols.
Functional groups are the groups of atoms or atoms which are bonded with parent carbon chain in the organic molecule and are responsible for the physical and chemical properties of the compound. In organic chemistry, there are different functional groups such as carboxylic acid, alcohol, ester, or amide.
(c)
Interpretation:
Thearomatic nature of caffeine molecule needs to be explained.
Concept introduction:
Organic compounds are the compounds which are mainly composed C and H atoms. The branch of chemistry that deals with preparation, reactions, and properties of organic compounds. The molecular formula of organic compound represents the number of bonded atoms with their atomic symbols.
Functional groups are the groups of atoms or atoms which are bonded with parent carbon chain in the organic molecule and are responsible for the physical and chemical properties of the compound. In organic chemistry, there are different functional groups such as carboxylic acid, alcohol, ester, or amide.

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Chapter 23 Solutions
CHEMISTRY-MASTERINGCHEMISTRY W/ETEXT
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