ORGANIC CHEMISTRY
6th Edition
ISBN: 9781266633973
Author: SMITH
Publisher: MCG
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Textbook Question
Chapter 6, Problem 44P
Consider the following reaction:
a. Use curved arrows to show the movement of electrons.
b. Calculate
c. Draw an energy diagram assuming that
d. What is
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Students have asked these similar questions
5.
Calculate AH for the following reaction.
C6H6(1) + 02 (g) --
---→ C(s) + H20(1)
State whether the reaction is exothermic or endothermic and why. The molar enthalpies of combustion
of carbon, water and benzene, are -394 kJ/mol, -286 kJ/mol, and -3,267.4 kJ/mol, respectively.
[4A,2T]
I
Which statement best describes the energy change for the
reaction associated with this energy diagram?
products
reactants
Reaction Progress
O This is an exothermic reaction with AH 0
This is an endothermic reaction with AH > 0
O This is an exothermic reaction with AH > 0
This is an endothermic reaction with AH < 0
Energy
Using bond energies from the table, estimate ΔH for the reaction below. The OH group on the product side is attached to a carbon.CH2=CH2(g) + H2O(g) ↔ CH3CH2OH(g)
Bond Energies, kJ/mol
Single Bonds
H
C
N
O
S
F
Cl
Br
I
H
432
C
411
346
N
386
305
167
O
459
358
201
142
S
363
272
---
---
286
F
565
485
283
190
284
155
Cl
428
327
313
218
255
249
240
Br
362
285
243
201
217
249
216
190
I
295
213
---
201
---
278
208
175
149
Multiple Bonds
C=C
602
C=N
615
C=O
799
CºC
835
CºN
887
CºO
1072
N=N
418
N=O
607
S=O (in SO2)
532
NºN
942
O2
494
S=O (in SO3)
469
Chapter 6 Solutions
ORGANIC CHEMISTRY
Ch. 6.2 - Prob. 2PCh. 6.3 - Problem 6.3 By taking into account...Ch. 6.3 - Problem 6.4 Use curved arrows to show the movement...Ch. 6.3 - Problem 6.5 Follow the curved arrows and draw the...Ch. 6.4 - Prob. 6PCh. 6.4 - Problem 6.7 Use the values in Table 6.2 to...Ch. 6.4 - Prob. 8PCh. 6.5 - aWhich Keq corresponds to a negative value of G,...Ch. 6.5 - Given each of the following values, is the...Ch. 6.5 - Given each of the following values, is the...
Ch. 6.5 - The equilibrium constant for the conversion of the...Ch. 6.6 - Prob. 13PCh. 6.6 - For a reaction with H=40kJ/mol, decide which of...Ch. 6.6 - For a reaction with H=20kJ/mol, decide which of...Ch. 6.7 - Draw an energy diagram for a reaction in which the...Ch. 6.7 - Prob. 17PCh. 6.7 - Prob. 18PCh. 6.8 - Problem 6.19 Consider the following energy...Ch. 6.8 - Draw an energy diagram for a two-step reaction,...Ch. 6.9 - Which value if any corresponds to a faster...Ch. 6.9 - Prob. 22PCh. 6.9 - Problem 6.23 For each rate equation, what effect...Ch. 6.9 - Prob. 24PCh. 6.10 - Identify the catalyst in each equation. a....Ch. 6 - Draw the products of homolysis or heterolysis of...Ch. 6 - Explain why the bond dissociation energy for bond...Ch. 6 - Classify each transformation as substitution,...Ch. 6 - Prob. 29PCh. 6 - 6.31 (a) Add curved arrows for each step to show...Ch. 6 - Prob. 35PCh. 6 - 6.39. a. Which value corresponds to a negative...Ch. 6 - Prob. 40PCh. 6 - For which of the following reaction is S a...Ch. 6 - Prob. 42PCh. 6 - Prob. 43PCh. 6 - 6.44 Consider the following reaction: .
Use curved...Ch. 6 - Prob. 45PCh. 6 - 6.50 The conversion of acetyl chloride to methyl...Ch. 6 - Prob. 50PCh. 6 - Prob. 53P
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- Using the BDE values from Appendix 3, calculate the Hrxn0 value and state if the reaction below is exothermic or endothermic. CH2=CH2 + HCl CH3CH2Clarrow_forwardCalculate the enthalpy change when 1.0(1 g of methane is burned in excess oxygen according to the reaction CH,(g) 4- 2O2(g) ->CO2(g) + H-CH/) 1H = -891 kJ/molarrow_forwardn Fig. 10.1, what kind of energy does ball A possess initially when at rest at the top of the hill? What kind of energies are involved as ball A moves down the hill? What kind of energy does ball A possess when it reaches the bottom of the hill and stops moving after hitting ball B? Where did the energy gained by ball B, allowing it to move up the hill, come from?arrow_forward
- Calculate AH for the reaction: 2NH3 (g) + O2(g) → N2H4 (1) + H2O(1) given the following data: 2NH3 (g) + 3N20(g) → 4N2(g) + 3H2O(1) AH = –1010. kJ N20(g) + 3H2 (9) → N¿H4(1)+H2O(1) AH = -317 kJ N2H4 (1) + O2 (g) → N2(g)+ 2H2O(1) AH = -623 kJ H2 (9) + 02 (9) → H2O(1) AH = -286 kJ ΔΗ - kJarrow_forward7. Estimate the enthalpy of reaction (in kJ/mol) for the combustion of methane. Be sure to show a lewis structure for each molecule. CH, (g) + 20, (g) ·CO, (g) + H,O (g) Bond Bond Enthalpy (kJ/mol) C-O 351 C=0 799 CEO 1070 O-O 142 O=0 498 C-H 414 O-H 460arrow_forwardIt is interesting to compare the “fuel value” of a hydrocarbonin a hypothetical world where oxygen is not thecombustion agent. The enthalpy of formation of CF41g2 is-679.9 kJ>mol. Which of the following two reactions is themore exothermic?CH41g2 + 2 O21g2 ¡ CO21g2 + 2 H2O1g2CH41g2 + 4 F21g2 ¡ CF41g2 + 4 HF1g2arrow_forward
- 1. Using two or more of the following. N.(g) + 10,(g) → N.O.(s); AH = 83.7 kJ N.(g) + O(g) → 2NO(g): AH 180.4 kJ IN.(g) + O.(g) → NO.(g): AH = 33.2 KJ IN.(g) + H₂(g) → NH,(g); AH = -45.9 kJ determine AH" for the following reaction. NO(g) + NO₂(g) → N₂O(g)arrow_forwardCalculate ΔH° for each reaction. a. HO• + CH4 → •CH3 + H2O b. CH3OH + HBr → CH3Br + H2Oarrow_forwardConsider methane, CH₄, and hydrogen, H₂, as possible fuel sources a. Write the chemical equation for the complete combustion of each fuel. Then find the enthalpy of combustion, △Hcomb, of each fuel. Express your answers in kJ/mol and kJ/g. Assume that water vapour, rather than liquid water, is formed in both reactions. b. Which is the more energetic fuel, per unit mass? c. Consider a fixed mass of each fuel. Which fuel would allow you to drive a greater distance? Explain briefly d. Describe how methane and hydrogen could be obtained. Which of these methods do you think is less expensive? Explain. e. Which fuel do you think is more environmentally friendly? Explain.arrow_forward
- Calculate ΔH° for the reaction using the given bond dissociation energies. CH4(g)+2O2(g)⟶CO2(g)+2H2O(g) Bond ΔH° (kJ/mol) O–OO–O 142 H–OH–O 459 C−HC−H 411 C=OC=O 799 O=OO=O 498 C–OC–O 358 What type of reaction is this?arrow_forwardIn reaction 1, If we had used 4 grams of NAOH instead of 2 g, would the heat gained by the solution [#6] have been larger, smaller or the same? Briefly explain.arrow_forwardCH,(9) + 2 O,(g) AH = -809.0 kJ/mol rxn Co,(9) + 2 H,0(g) ΔΗ. = -81.3 kJ 'cond 2 H,0U) Given the energy diagram above, what is AH when two moles of methane are combusted? -401.15 kJ +1604.6 kJ -802.3 kJ +802.3 kJ +401.15 kJ O -1604.6 kJarrow_forward
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