
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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4B. Write the formation reaction for methane gas at standard pressure and 25°C for which the standard
enthalpy of formation is -891.0 kJ/mol. Then calculate the standard enthalpy of formation for the
same formation reaction but at a temperature of 37°C.
Carbon (what form?)
Hydrogen gas
Methane
Com° = 8.527 J / (K mol)
Cp
= 28.824 J / (K mol)
Cp.m° = 35.31 J / (K mol)

Transcribed Image Text:temperature be? You can
kJ/mol at temperatures within 20 K of its standa
least qualitatively correct (hotter or colder) with a phase diagram.
) Write the formation reaction for methane gas at standard pressure and 25°C for which the standard
enthalpy of formation is-891.0 kJ/mol. Then calculate the standard enthalpy of formation for the
same formation reaction but at a temperature of 37°C.
Carbon (what form?)
Hydrogen gas
Methane
CP.m° = 8.527 J/ (K mol)
Cp.m° = 28.824 J/(K mol)
CP,m° = 35.31 J/ (K mol)
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