Concept explainers
(a)
Interpretation:
The curved-arrow notation to derive the given resonance structures is to be stated. The structure which is more important is to be stated. The reason for the corresponding answer is to be stated.
Concept introduction:
Resonance is the phenomena of the delocalization of pi electrons to give extra stability to the molecule. This extra stability comes from the distribution of the energy of the molecule in the resonance structures formed.
(b)
Interpretation:
The curved-arrow notation to derive the given resonance structures is to be stated. The structure which is more important is to be stated. The reason for the corresponding answer is to be stated.
Concept introduction:
Resonance is the phenomena of the delocalization of pi electrons to give extra stability to the molecule. This extra stability comes from the distribution of the energy of the molecule in the resonance structures formed.
(c)
Interpretation:
The curved-arrow notation to derive the given resonance structures is to be stated. The structure which is more important is to be stated. The reason for the corresponding answer is to be stated.
Concept introduction:
Resonance is the phenomena of the delocalization of pi electrons to give extra stability to the molecule. This extra stability comes from the distribution of the energy of the molecule in the resonance structures formed.
(d)
Interpretation:
The curved-arrow notation to derive the given resonance structures is to be stated. The structure which is more important is to be stated. The reason for the corresponding answer is to be stated.
Concept introduction:
Resonance is the phenomena of the delocalization of pi electrons to give extra stability to the molecule. This extra stability comes from the distribution of the energy of the molecule in the resonance structures formed.
Want to see the full answer?
Check out a sample textbook solutionChapter 15 Solutions
EBK ORGANIC CHEMISTRY
- Testosterone is an anabolic steroid. The structure of testosterone is shown below. What is the idealised bond angle at the indicated atom (ii) ? Hint: atom (iv) has been completed for you as an example. (iv) bond angle: 109.5°, geometry of the electron pairs: tetrahedral, shape of the bonds: tetrahedral ·····|||I H ····||||I ii ivarrow_forwardHow do I (a) determine the energy change in the following reaction2 O2 + CH4→ CO2 + 2 H2Ogiven the following bond dissociation energies:C-C 340kJ/mol; C-H 420kJ/mol; O=O 490 kJ/mol; O-H 460 kJ/mol; C=O 720 kJ/mol. (b) Is the reaction exothermic or endothermic? Explaination?arrow_forwardComplete and balance the following equations. Write the entire equation, including the reactants and products, and include the physical state of each species. (Click in the answer box to activate the palette.) (a) K(s) + H2O(I) → (b) NaH(s) + H20(1) –arrow_forward
- (e) The mean bond enthalpy for chlorine is +242 kJ mol·l and that for fluorine is +158 kJ mol-". The enthalpy of formation of CIF (g) is 56 kJ mol·l (ii) Calculate the enthalpy of formation of, gaseous Chlorine Trifluoride, CIF3 (g), using the bond enthalpy value you obtained in part (i). (iii) The bond enthalpy of CIF3 calculated in part (ii) is likely to be different than that determined from experiment. Explain.arrow_forwardWhich of the following statements about the reaction H2(g)+O2(g)→H2O(l)H2(g)+O2(g)→H2O(l) is true? (i) This is an example of an acid–base reaction. (ii) O2O2 is oxidized in this reaction. (iii) H2H2 is reduced in this reaction. Which of the following statements about the reaction is true? (i) This is an example of an acid–base reaction. (ii) is oxidized in this reaction. (iii) is reduced in this reaction. iii only i only ii and iii ii only None of them are true.arrow_forward(a) Use Lewis symbols to represent the reaction that occursbetween Ca and F atoms. (b) What is the chemical formulaof the most likely product? (c) How many electrons are transferred?(d) Which atom loses electrons in the reaction?arrow_forward
- The arrangement of atoms in several biologically important molecules is given here. Complete the Lewis structures of these molecules by adding multiple bonds and lone pairs. Do not add any more atoms. (a) the amino acid serine: 車 0-H H-C-H H Н—N—с—с—о—н H (b) нон H-N-C-N-H (c) pyruvic acid: ноо н—с—с—с—о—н H. (d) uracil: H (e) carbonic acid: H-0-C-0-Harrow_forwardUsing the periodic table only, arrange the members of eachof the following sets in order of increasing bond strength:(a) Br--Br, Cl--Cl, I--I(b) S--H, S--Br, S--Cl(c) C=N, C--N, C≡Narrow_forwardFor each of the following covalent bonds: (a) use the symbols δ+ and δ- to indicate the direction of polarity (if any).(a) C-F; (b) N-Br; (c) B-C; (d) Si-H(b) Rank the following covalent bonds in order of increasing polarity. (i) C-H, O-H, N-H; (ii) C-N, C-O, B-O; (iii) C-P, C-S, C-Narrow_forward
- Write the Lewis structures for the following, and include resonance structures where appropriate. Indicate which has the strongest carbon-oxygen bond.(a) CO2(b) COarrow_forwardWith reference to the “Chemistry Put to Work” box on explosives, (a) use bond enthalpies to estimate the enthalpy change for the explosion of 1.00 g of nitroglycerin. (b) Write a balanced equation for the decomposition of TNT. Assume that, upon explosion, TNT decomposes into N2(g), CO2(g), H2O(g), and C(s).arrow_forwardThe organic molecules shown here are derivatives of benzene in which six-membered rings are “fused” at the edges of the hexagons. (a) Determine the empirical formula of benzene and of these three compounds. (b) Suppose you are given a sample of one of the compounds. Could combustion analysis be used to determine unambiguously which of the three it is? (c) Naphthalene, the active ingredient in mothballs, is a white solid. Write a balanced equation for the combustion of naphthalene to CO2(g) and H2O(g). (d) Using the Lewis structure for naphthalene and the average bond enthalpies in Table 8.4, estimate the heat of combustion of naphthalene in kJ/mol. (e) Would you expect naphthalene, anthracene, and tetracene to have multiple resonance structures? If so, draw the additional resonance structures for naphthalene. (f) Benzene, naphthalene, and anthracene are colorless, but tetracene is orange. What does this imply…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