Concept explainers
(a)
Interpretation: Categorization of resonance structures as “Equivalent” and “Not equivalent” resonance structure for the bases mentioned below should be determined.
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: Resonance structure in base mentioned below that has lowest potential energy should be determined.
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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Organic Chemistry: A Guided Inquiry
- Be sure to answer all parts. The pk of three different C-H bonds is given below. For each compound, draw the conjugate base, including all possible resonance structures for compound C. Use skeletal structures when drawing all conjugate bases. compound A H H H pK₂ = 50 Conjugate base of compound A: Conjugate base of compound B: Conjugate base of compound C: edit structure ... compound B resonance structure (negative charge on C) H H edit structure ... (one Lewis structure) edit structure ... (one resonance structure) X H pka = 43 compound C edit structure ... H H pK₂ = 19.2 resonance structure (negative charge on O) Harrow_forwarda. Which of the following has a greater electronegativity? (circle one) Carbon / Cesium b. Explain why you chose your answer in Za.arrow_forwardO REPRESENTATIONS OF ORGANIC MOLECULES Ranking resonance structures Rank the resonance structures in each row of the table from major to minor. For example, in the first row, select (major) for the major resonance contributor. If two or more structures in the same row contribute equally, rank them equally by selecting the same number. H. H H. H. H. H. H. H. (Rank) (Rank) (Rank) H. H. H. H. H. H. H. (Rank) (Rank) :o: Rank) (Rank) 74°F DELL F5 F6 F7 F8 F9 F10 F11 PrtScr F12 24arrow_forward
- A. For the molecule circled, draw the potential energy using this diagram. B. Draw the other three Newman projections based on the drawing at the bottom leftarrow_forward( do 4 with explanation )arrow_forward9. The two molecules shown below are structurally very similar. Draw all resonance structure for each species with curved arrows and circle which is molecule (A or B) is more stable because it has more resonance structures. Only use patterns 2 and 3. A Barrow_forward
- Help! a.) Draw all the important resonance contributors for the structure shown below. Use curved arrows to show the movement of electrons between these contributors. b.) Draw the hybrid resonance hybrid structure.arrow_forward2. Each resonance structure of a given molecule contributes to the resonance hybrid. The more stable the resonance structure, the more that resonance structure contributes to the resonance hybrid. For the following resonance structures, a. Circle the resonance structure that contributes most to the resonance hybrid. b. Explain your choice for a in complete sentences. c. Draw the resonance hybrid. d. Add curved arrows to indicate the flow of electrons in each structure except the D. H A Q Search B hyji C Darrow_forward( explain well with deeply explanation of each point of each question )arrow_forward
- (do last four asap )arrow_forwardA. Determine whether the curved arrow(s) shown below generate a valid or invalid resonance structure. Draw the resonance structure that would result from each properly drawn arrow and identify the arrow pushing pattern (i.e. allylic positive charge, allylic lone pair, pi bond between atoms of a different electronegativity, lone pair adjacent to a positive charge, alternating pi bonds in a ring.arrow_forward2. 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 belowarrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning