(a)
Interpretation: The triene that has largest heat of hydrogenation is to be predicted.
Concept introduction: Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two or more carbon atoms.
The stability of conjugated diene is more than isolated diene. Due to which the heat of hydrogenation is smaller for conjugated diene, whereas heat of hydrogenation for isolated diene is larger.
(b)
Interpretation: The triene that has smallest heat of hydrogenation is to be predicted.
Concept introduction: Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two or more carbon atoms.
The stability of conjugated diene is more than isolated diene. Due to which the heat of hydrogenation is smaller for conjugated diene, whereas heat of hydrogenation for isolated diene is larger.
(c)
Interpretation: The triene that absorbs the longest
Concept introduction: Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two or more carbon atoms.
The energy difference between the ground and excited state decreases when number of conjugated bonds increases. Due to this absorption shifts to the longer wavelengths.
(d)
Interpretation: The triene that is most reactive in the Diels-Alder reaction is to be predicted.
Concept introduction: Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two or more carbon atoms.
The stability of conjugated diene is more than isolated diene.
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Chapter 16 Solutions
Package: Loose Leaf for Organic Chemistry with Biological Topics with Connect Access Card
- PROBLEM 5+ What is the major product of each of the following reactions? a. CH3CH2CHCH3 + HBr d. + HBr A OH OH CH3 CH3 e. b. -OH + HCI + HCl A, OH CH3 OH CH3 c. CH3C CHCH3 + HBr CH3 OH f. CHCH3 + HCl ^>arrow_forwardOne suggestion for solving the fuel shortage due to decreasing volumes of fossil fuels are hydrogen / oxygen fuel cells. a. State the two half-cell reaction equations for such fuel cells. Calculate the cell potential as well as the electrical work gained by this fuel cell at standard conditions with E002/H20 = 1.229 V. b. Compare the fuel cell to the Gibbs free energy of the combustion reaction of n-octane at standard conditions. Use ASºm, n-Oct., 1 = 361.2 J/mol K.arrow_forwarda. Determine the electrochemical potential of the following cell using E°Mg2+/Mg = -2.362 V. Mg | Mg2+ (a=104) || H* (a = 4) | H2 (p = 0.5 bar) | Pt b. A galvanic chain consists of Co²+ / Co and Ag+ / Ag half-cells with EºCo²+/Co = -0.282 V and Eº Ag+/Ag = 0.799 V. Determine which half-cell will be reduced and which one will be oxidised. Furthermore, calculate the electrochemical potential as well as the equilibrium constant of the whole cell at i. [Co²+] = 0.1 M and [Ag+] = 0.5 M ii. [Co²+] = 0.001 M and [Ag*] = 1.5 Marrow_forward
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Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning