Custom eBook for Organic Chemistry
Custom eBook for Organic Chemistry
2nd Edition
ISBN: 9798214171104
Author: Straumanis
Publisher: Cengage Custom
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Chapter 5, Problem 18E

(a)

Interpretation Introduction

Interpretation: The terms in chemistry that can be represented by underlined terms in given statement should be explained.

Concept introduction: When one single structure is unable to describe all the properties of single molecule, a phenomenon called resonance comes into play. This arises when two or more than two Lewis structures are possible for one molecule. All such structures are called resonating structures and have same placement of atoms in them but these have different locations of bond pairs and lone pairs. The resonating structures are inter-convertible with each other. The resultant of all the resonating or contributing structures is called the resonance hybrid.

(b)

Interpretation Introduction

Interpretation: The terms in chemistry that can be represented by underlined terms in given statement should be explained.

Concept introduction: When one single structure is unable to describe all the properties of single molecule, a phenomenon called resonance comes into play. This arises when two or more than two Lewis structures are possible for one molecule. All such structures are called resonating structures and have same placement of atoms in them but these have different locations of bond pairs and lone pairs. The resonating structures are inter-convertible with each other. The resultant of all the resonating or contributing structures is called the resonance hybrid.

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Each of the following proposed resonance moves has a flaw. For ones that are completely incorrect, explain why. For ones that can be easily corrected, make that correction.
2. Tetrahydrocannabinolic acid (THCA), the precursor to THC, a psvchoactive: H.. • This molecule is missing eight lone pairs. Add them to the structure above • Check the formal charges of the oxygen atoms above. Do any of them have a non-zero formal charge? If so, add the charges to the appropriate oxygen atoms • THCA is a weak acid. Identify and circle the acidic hydrogen on the above structure • Draw a resonance structure of this molecule below
I got this marked wrong on an assignment, but I'm not sure why. Please help me find the correct resonance structure.

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