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Use bond-dissociation enthalpies (Table 4-2, p. 143) to

Organic Chemistry | 8th Edition | ISBN: 9780321768414 | Authors: L.G. Wade Jr ISBN: 9780321768414 33

Solution for problem 40SP Chapter 4

Organic Chemistry | 8th Edition

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Organic Chemistry | 8th Edition | ISBN: 9780321768414 | Authors: L.G. Wade Jr

Organic Chemistry | 8th Edition

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Problem 40SP

Use bond-dissociation enthalpies (Table 4-2, p. 143) to calculate values of \(\Delta H^{\circ}\) for the following reactions.

 \(C H_{3}-C H_{3}+I_{2} \rightarrow C H_{3} C H_{2} I+H I\)

\(C H_{3} C H_{2} C l+H I \rightarrow C H_{3} C H_{2} I+H C l\)

\(\left(C H_{3}\right)_{3} C-O H+H C l \rightarrow\left(C H_{3}\right)_{3} C-C l+H_{2} O\)

 \(C H_{3} C H_{2} C H_{3}+H_{2} \rightarrow C H_{3} C H_{3}+C H_{4}\)

\(C H_{3} C H_{2} O H+H B r \rightarrow C H_{3} C H_{2}-B r+H_{2} O\)

Equation Transcription:

Text Transcription:

\Delta H^{\circ}

CH_3-CH_3+I_2 \rightarrow CH_3CH_2I+HI

CH_3CH_2Cl +HI \rightarrow CH_3CH_2I+HCl

(CH_3)_3C-OH+HCl \rightarrow (CH_3)_3C-Cl+H_2O

CH_3CH_2CH_3+H_2 \rightarrow CH_3CH_3+CH_4

CH_3CH_2OH+HBr \rightarrow CH_3CH_2-Br+H2O

Step-by-Step Solution:

Solution 40SP:

Here, we are going to calculate the bond enthalpy change for each of the reaction.

Step 1:

The overall enthalpy change for a reaction is the sum of the dissociation enthalpies

of the bonds broken minus the sum of the dissociation enthalpies of the bonds formed.

o = [Bond dissociation energy for bonds broken] -[Bond dissociation energy for bonds formed]

Step 2 of 6

Chapter 4, Problem 40SP is Solved
Step 3 of 6

Textbook: Organic Chemistry
Edition: 8
Author: L.G. Wade Jr
ISBN: 9780321768414

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Use bond-dissociation enthalpies (Table 4-2, p. 143) to