Concept explainers
Interpretation:
The two different analogies for the concept of resonance have to be compared and the more appropriate analogy has to be identified.
Concept Introduction:
Resonance
Resonance is the phenomenon of delocalization of electrons of pi bond (either pi bonding or non-bonding or both) in a molecule such the molecule cannot be represented by a single Lewis structure as the delocalization of electrons gives rise to more than one structure to a same molecule.
Resonance structures
The various structures for a molecule that are formed by delocalization of electrons are termed as resonance structures.
Rules for writing resonance structures
All the resonance structures must have valid and appropriate Lewis structures.
The resonance structure are written and drawn such a way that position of atomic nuclei must not be changed.
Hybridization of atoms in the molecule must not be changed.
The position of bond (electrons) also known as distribution of electrons only must be changed.
All of the atoms involved in resonance and also the atoms that are directly bonded to those atoms must be coplanar (lie in same plane) nearly.

Want to see the full answer?
Check out a sample textbook solution
Chapter 9 Solutions
EBK GENERAL CHEMISTRY: THE ESSENTIAL CO
- C. I, II, III Consider the reaction sequence below to answer the following questions: 0 0 1. NaOEt, EtOH ΕΙΟ OEt 2 Compound X CO₂Et NaOEt, EtOH CO₂Et Br Compound Y A Compound Z A. Compound X, diethyl propanedioate, is more commonly known as a. ethyl acetoacetate acetoacetic ester b. C. oxalic ester d. malonic ester B. Write the complete stepwise mechanism for the conversion of Compound X into Compound Y. Show all electron flow with arrows and draw all intermediate structures.arrow_forwardDiethyl malonate can be prepared by the following reaction sequence. Draw the structures of each of the missing intermediates in the boxes provided EtO 0 H3C 11 C 1. Br₂ PBr OH 2 H₂O 010 0 CH3CH₂OH C CH2 OEt Ha CH3CH2OH на NaCN H₂SO4 NC H₂O, heat CH2 OCH2CH3arrow_forwardShow how you would accomplish each of the following transformations. More than one step may be quired. Show all reagents and all intermediate structures. [three only] A. 0 CH3 B. C. D. H 0 0 OCH 3 CH₂CO₂CH2CH3 H3C ➤ HN C NO₂ Clarrow_forward
- Choose the BEST reagent for carrying out each of the following conversions. A. CO₂CH3 CO₂CH3 0 CO₂H a. LiAlH4, ether C. CrO3, pyridine B. 0 H a. C. NaBH4, ethanol NaOH, H2O CO₂H OH HD b. NaBH4, ethanol d. H₂/Pd CH₂OH b. CH₂PPh3 d. All of the abovearrow_forwardWrite the complete stepwise mechanism for the acid-catalyzed hydrolysis of the following amide to yield mandelic acid. Show all electron flow with arrows and draw the structures of all intermediate species. OH H-OH₂ CnH2 :0: OH C OH + NH4 10: The purpose of the acid catalyst in the hydrolysis of an amide is: to enhance the electrophilicity of the amide carbonyl carbon a. to enhance the nucleophilicity of the water molecule b. C. to enhance the electrophilicity of the water molecule d. to shift the equilibrium of the reactionarrow_forward1.arrow_forward
- Can I please get help with this?arrow_forward. Provide IUPAC names for each of the following structures OR draw structures corresponding to each of the following names: [Three only]kk a. H₂N- 0 COCH2CH3 benzocaine b. What is the correct structure for phenylbenzoate? C a. 0 C-O O b. H3C-C-O 0 0 C-O-CH3 d. CH₂O C-CHZ c. Acetyl chloride d. 3,4,5-trimethoxybenzoyl chloridearrow_forward. Draw structures corresponding to each of the following names or Provide IUPAC names for each of the ollowing structures [for 4 ONLY]. A. 2-propylpentanoic acid. B. m-chlorobenzoic acid. C. 0 0 HOC(CH2) COH glutaricadd D. E. F. 0 OH HO OH HO INCO salicylicadd H3C CH3 C=C tgicadd H COOH CH₂C=N 4arrow_forward
- The reaction of a carboxylic acid with an alcohol in the presence of acid is termed Fischer esterification. 0 0 C .C. OH + CH3OH OCH3 + H₂O HCI A B C A. The nucleophile in this reaction is B. Compound C functions as a. a base scavenger b. a solvent C. a catalyst in this reaction. d. a neutralizer C. Fischer esterification is an example of: ........ a. nucleophilic acyl addition b. nucleophilic acyl substitution c. nucleophilic acyl elimination d. nucleophilic acyl rearrangementarrow_forwardThe Handbook of Chemistry and Physics gives solubilities of the following compounds in grams per 100 mL of water. Because these compounds are only slightly soluble, assume that the volume does not change on dissolution and calculate the solubility product for each. (a) BaSeO4, 0.0118 g/100 mLarrow_forwardCan I please get help with answering this?arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY





