Styrene (C8H8, FW 104.15) is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.62 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at 25°C. (Given: Hf°[CO2(g)] = –393.5 kJ/mol, Hf°[H2O(l)] = –285.8 kJ/mol, Hf°[H2O(g)] = –241.8 kJ/mol) A) 147.8 kJ/mol B) 323.8 kJ/mol C) -636.7 kJ/mol D) -4249 kJ/mol E) -8730 kJ/mol
Styrene (C8H8, FW 104.15) is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.62 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at 25°C. (Given: Hf°[CO2(g)] = –393.5 kJ/mol, Hf°[H2O(l)] = –285.8 kJ/mol, Hf°[H2O(g)] = –241.8 kJ/mol) A) 147.8 kJ/mol B) 323.8 kJ/mol C) -636.7 kJ/mol D) -4249 kJ/mol E) -8730 kJ/mol
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Styrene (C8H8, FW 104.15) is one of the substances used in the production of synthetic rubber. When
styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at
25°C, 42.62 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at
25°C.
(Given: Hf°[CO2(g)] = –393.5 kJ/mol, Hf°[H2O(l)] = –285.8 kJ/mol,
Hf°[H2O(g)] = –241.8 kJ/mol)
A) 147.8 kJ/mol
B) 323.8 kJ/mol
C) -636.7 kJ/mol
D) -4249 kJ/mol
E) -8730 kJ/mol
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