Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 50PS
The enthalpy changes of the following reactions can be measured:
C2H4(g) + 3 O2(g) → 2 CO2(g) + 2 H2O(ℓ)
ΔrH° = –1411.1 kJ/mol-rxn
Q2H5OH(ℓ) + 3 O2(g) → 2 CO2(g) + 3 H2O(ℓ)
ΔrH° = –1367.5 kJ/mol-rxn
(a) Use these values and Hess’s law to determine the enthalpy change for the reaction
C2H4(g) + H2O(ℓ) → C2H5OH(ℓ)
(b) Draw an energy level diagram that shows the relationship between the energy quantities involved in this problem.
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Chapter 5 Solutions
Chemistry & Chemical Reactivity
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Ch. 5.4 - Nitrogen gas (2.75 L) is confined in a cylinder...Ch. 5.4 - Which of the following processes will lead to a...Ch. 5.4 - 2. In which of the following reactions is there a...Ch. 5.5 - The combustion of ethane, C2H6, has an enthalpy...Ch. 5.5 - 1. For the reaction 2 Hg(l) + O2(g) → 2 HgO(s),...Ch. 5.5 - 2. For the reaction 2 CO(g) + O2(g) → 2 CO2(g)....Ch. 5.6 - Assume 200. mL of 0.400 M HCl is mixed with 200....Ch. 5.6 - A 1.00-g sample of ordinary table sugar (sucrose,...Ch. 5.6 - A student used a coffee-cup calorimeter to...Ch. 5.6 - If, in the experiment described in the previous...Ch. 5.7 - Use Hesss law to calculate the enthalpy change for...Ch. 5.7 - Calculate the standard enthalpy of combustion for...Ch. 5.7 - Prob. 1RCCh. 5.7 - The standard enthalpies of formation of KNO3(s)...Ch. 5.7 - Prob. 2QCh. 5.7 - The decomposition of nitroglycerin (C3H5N3O9)...Ch. 5.7 - Prob. 2RCCh. 5 - Define the terms system and surroundings. 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