Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
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Chapter 4, Problem 4.53SP
Interpretation Introduction
Interpretation: The value of
Concept introduction: The relationship between equilibrium constant and Gibbs free energy is expressed as,
To determine: The value of
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4) Given: S (s)+02 (g) →SO 2 (g)
2 SO 3 (g) →2 SO2 (g) +O 2 (g)
Find AH° for : 2 S(s ) + 3 O 2(g) →2 SO3 (g)
ΔΗ
-296.1 kJ
AH° =
198.2 kJ
A) -394.0 kJ
B) +97.9 kJ
C) -790.4 kJ
D) -97.9 kJ
Calculate A,H for the following reaction:
5C(s) + 6H2(9) → C5H12(1)
Use the following reactions and given ArH's.
C5H12 (1) + 8 O2(g) → 5CO2(g) + 6H2O(g), A;H = -3505.8 kJ mol
C(s) + 02(g) → CO2(g), ArH = -393.5 kJ mol1
2H2(g) + O2(9) → 2H2O(g) , A¡H = -483.5 kJ mol
Under which conditions is a reaction sure to be reactant-favored?
the reaction is endothermic and its ∆S is negative
the reaction is endothermic and its ∆S is positive
the reaction is exothermic and its ∆S is negative
the reaction is exothermic and its ∆S is positive
Chapter 4 Solutions
Organic Chemistry (9th Edition)
Ch. 4.3A - Draw Lewis structures for the following free...Ch. 4.3B - a. Write the propagation steps leading to the...Ch. 4.3C - Prob. 4.3PCh. 4.3C - Prob. 4.4PCh. 4.4 - The following reaction has a value of G =...Ch. 4.4 - Under base-catalyzed conditions two molecules of...Ch. 4.5B - When ethene is mixed with hydrogen in the presence...Ch. 4.5B - For each reaction, estimate whether S for the...Ch. 4.7 - a. Propose a mechanism for the free radical...Ch. 4.7 - a. Using bond-dissociation enthalpies from...
Ch. 4.8 - The reaction of tert-butyl chloride with methanol...Ch. 4.8 - Under certain conditions, the bromination of...Ch. 4.8 - When a small piece of plat num is added to a...Ch. 4.10 - Prob. 4.14PCh. 4.10 - Prob. 4.15PCh. 4.12 - The bromination of methane proceeds through the...Ch. 4.12 - a. Using me BDEs in Table4-2 (page 167 ), compute...Ch. 4.13A - What would be the product ratio in the...Ch. 4.13A - Classify each hydrogen atom in the following...Ch. 4.13B - Use the bond-dissociation enthalpies in Tabte4-2...Ch. 4.13B - Prob. 4.21PCh. 4.13B - Prob. 4.22PCh. 4.14 - a. Compute the heats of reaction for abstraction...Ch. 4.14 - 2,3-Dimethylbutane reacts with bromine in the...Ch. 4.14 - Prob. 4.25PCh. 4.15 - Prob. 4.26PCh. 4.15 - Prob. 4.27PCh. 4.16A - Prob. 4.28PCh. 4.16A - Prob. 4.29PCh. 4.16B - Prob. 4.30PCh. 4.16C - Prob. 4.31PCh. 4.16C - Acetonitrile (CH3C N) is deprotonated by very...Ch. 4.16D - Prob. 4.33PCh. 4 - The following reaction is a common synthesis used...Ch. 4 - Consider the following reaction-energy diagram. a....Ch. 4 - Draw a reaction-energy diagram for a one-step...Ch. 4 - Draw a reaction-energy diagram for a two-step...Ch. 4 - Prob. 4.38SPCh. 4 - Treatment of tert-butyl alcohol with concentrated...Ch. 4 - Label each hydrogen atom in the following...Ch. 4 - Prob. 4.41SPCh. 4 - Prob. 4.42SPCh. 4 - Prob. 4.43SPCh. 4 - Prob. 4.44SPCh. 4 - Prob. 4.45SPCh. 4 - Prob. 4.46SPCh. 4 - For each compound, predict the major product of...Ch. 4 - When exactly 1 mole of methane is mixed with...Ch. 4 - Prob. 4.49SPCh. 4 - Prob. 4.50SPCh. 4 - Prob. 4.51SPCh. 4 - When dichloromethane is treated with strong NaOH,...Ch. 4 - Prob. 4.53SPCh. 4 - When a small amount of iodine is added to a...Ch. 4 - Prob. 4.55SPCh. 4 - When healthy, Earths stratosphere contains a low...Ch. 4 - Prob. 4.57SPCh. 4 - lodination of alkanes using iodine (I2) is usually...
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- At 25 ̊C, what is the free energy (∆G ̊) of a reaction with Keq = 10? Is this a thermodynamically-favorable reaction? 2. At 25 ̊C, what is the free energy (∆G ̊) of a reaction with Keq = 100? Is this a thermodynamically-favorable reaction? 3. At 25 ̊C, what is the free energy (∆G ̊) of a reaction with Keq = 0.1? Is this a thermodynamically-favorable reaction? 4. At 25 ̊C, what is the free energy (∆G ̊) of a reaction with Keq = 0.01? Is this a thermodynamically-favorable reaction? 5. What do you notice about the sign of ∆G ̊ and the magnitude of Keq? 6. What is the change in ∆G ̊ when Keq increases by a factor of 10? 100? Write 1-2 sentences to describe this relationship.arrow_forwardCalculate the energy change of the following reaction: 2NO + O2→ 2NO2 ΔH: NO = 90.0 kJ/mol NO2= 34.0 kJ/mol O2= 0.0 kJ/mol a -180 kJ b -112 kJ c 35.0 kJ d -248 kJarrow_forwardGiven the following data: 2 03(g) → 3 0₂(g) 0₂(g) → 2 0(g) NO(g) + 03(g) → NO₂(g) + O₂(g) calculate AH for the reaction NO(g) + O(g) →→ NO₂(g). KJ ΔΗ = −286 kJ ΔΗ = +498 KJ ΔΗ = – 199 kJarrow_forward
- Difluoroacetylene (C2F2) gas has a ΔHf° = 241.2 kJ/mole and a a ΔGf° = 191.2 kJ/mole. Hexafluorobenzene(C6F6) gas has a ΔHf° = 132.8 kJ/mole and a a ΔGf° = 78.2 kJ/mole. For the following reaction: C6F6(g) ⇌ 3C2F2(g) Calculate:a) The ΔS for the reaction at 25 °Cb) The equilibrium constant K at 25 °Cc) The equilibrium constant K at 2700 °C (assuming there is no temperature dependance on ΔH and ΔS)arrow_forwardGiven the following reactions 2NO → N2 + O2 ΔH = -180 kJ 2NO + O2 → 2NO2 ΔH = -112 kJarrow_forwardA. Suggest chemical tests to differentiate the following pairs of organic compounds given the chemical reaction for the positive sign. Write the observable change for the positive sign of reaction and the chemical reaction for the compound that will test positive. Chemical Test and Positive Sign of Reaction Test: Compound Chemical Reaction which will Test for the Positive Positive Sign он H3C H3C° CH3 Positive Sign: Sw1 halogenation `CH3 2-pentanone Он 2-pentanol Test: H3C haloform formation H3C `CH3 Positive Sign: isopropyl alcohol 1-propanolarrow_forward
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