Chemistry & Chemical Reactivity
10th Edition
ISBN: 9781337399074
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 18.7, Problem 2.2ACP
It has been demonstrated that buckminsterfullerene (C60), another allotrope of carbon (Section 2.3), may be converted into diamond at room temperature and 20,000 atmospheres pressure (about 2 GPa). The standard enthalpy of formation, ΔfH°, for buckminsterfullerene is 2320 kJ/mol at 298.2 K.
- a. Calculate ΔrH° for the conversion of C60 to diamond at standard state conditions and 2982 K.
- b. Assuming that the standard entropy per mole of carbon in both C60 and diamond is comparable (both about 23 J/K mol), is the conversion of C60 to diamond product-favoredat room temperature?
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Bromine monofluoride (BrF) disproportionates to bromine gas and bromine tri- and pentafluorides. Use the following to find ΔH°rxn for the decomposition of BrF to its elements 3BrF(g) →Br₂(g)+BrF₃(l) ΔH°rxn=-125.3 kJ 5BrF(g) →2Br₂(g)+BrF₅(l) ΔH°rxn=-166.1 kJ BrF₃(l)+F₂(g) →BrF₅(l) ΔH°rxn=-158.0 kJ
Calculate AH for the reaction
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AH =
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23.
Chapter 18 Solutions
Chemistry & Chemical Reactivity
Ch. 18.3 - Predict which substance in each pair has the...Ch. 18.3 - Prob. 18.2CYUCh. 18.4 - Based on rH and rS, predict the spontaneity of the...Ch. 18.6 - Prob. 18.4CYUCh. 18.6 - Prob. 18.5CYUCh. 18.6 - Oxygen was first prepared by Joseph Priestley...Ch. 18.6 - Prob. 18.7CYUCh. 18.6 - Prob. 18.8CYUCh. 18.6 - Prob. 18.9CYUCh. 18.7 - Consider the hydrolysis reactions of creatine...
Ch. 18.7 - Prob. 1.2ACPCh. 18.7 - The decomposition of diamond to graphite...Ch. 18.7 - It has been demonstrated that buckminsterfullerene...Ch. 18 - Solid NH4NO3 is placed in a beaker containing...Ch. 18 - Acetic acid, a weak acid, was added to a beaker...Ch. 18 - Identify the following processes as either...Ch. 18 - Identify the following processes as either...Ch. 18 - Prob. 5PSCh. 18 - Predict whether each of the following processes...Ch. 18 - Indicate which of the following processes are...Ch. 18 - Prob. 8PSCh. 18 - Prob. 9PSCh. 18 - Prob. 10PSCh. 18 - Prob. 11PSCh. 18 - Calculate the entropy change that occurs when 1.00...Ch. 18 - Prob. 13PSCh. 18 - Calculate the change in entropy of a system with...Ch. 18 - The third law of thermodynamics says that a...Ch. 18 - Identify trends in S values: (a) For the halogens:...Ch. 18 - Which substance has the higher entropy? (a) dry...Ch. 18 - Which substance has the higher entropy? 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