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he standard enthalpy of the reaction fc CH-CU.

he standard enthalpy of the reaction fc CH-CU.

Chemistry
Chemistry
9th Edition
ISBN:9781133611097
Author:Steven S. Zumdahl
Publisher:Steven S. Zumdahl
Chapter6: Thermochemistry
Section: Chapter Questions
Problem 17Q: The enthalpy of combustion of CH4(g) when H2O(l) is formed is 891 kJ/mol and the enthalpy of...
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For items 11 and 12: The standard enthalpy of formation of ethane CH3CH3 (g) and ethylene (CH2=CH2) were -84.68 and +52.26 kJ/mol. The heat capacities for CH3CH3 (g), CH2=CH2 (g) and H2 (g) are 52.63, 43.56 and 28.824 J/mol K respectively. 11.) Calculate the standard enthalpy of the reaction for the hydrogenation of ethylene to ethane: CH2 = CH2 (g) + H2 (g) → CH3CH3 (g). A.) +136.94 kJ/mol B.) -136.94 kJ/mol C.) -4425 kJ/mol D.) +1.62 kJ/mol 12.) If the enthalpy of the reaction was at 298 K, what would be the enthalpy of hydrogenation of ethylene to ethane at 373 K? A.) -1.48 kJ/mol B.) +1.48 kJ/mol C.) -138.42 kJ/mol D.) -135.46 kJ/mol E.) +135.46 kJ/mol
Transcribed Image Text:For items 11 and 12: The standard enthalpy of formation of ethane CH3CH3 (g) and ethylene (CH2=CH2) were -84.68 and +52.26 kJ/mol. The heat capacities for CH3CH3 (g), CH2=CH2 (g) and H2 (g) are 52.63, 43.56 and 28.824 J/mol K respectively. 11.) Calculate the standard enthalpy of the reaction for the hydrogenation of ethylene to ethane: CH2 = CH2 (g) + H2 (g) → CH3CH3 (g). A.) +136.94 kJ/mol B.) -136.94 kJ/mol C.) -4425 kJ/mol D.) +1.62 kJ/mol 12.) If the enthalpy of the reaction was at 298 K, what would be the enthalpy of hydrogenation of ethylene to ethane at 373 K? A.) -1.48 kJ/mol B.) +1.48 kJ/mol C.) -138.42 kJ/mol D.) -135.46 kJ/mol E.) +135.46 kJ/mol
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