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b) Construct an enthalpy cycle and calculate the enthalpy of combustion in each case using the above data. i) Ethane 2 C₂H6 (g) + 7 O2(g) → 4 CO2 (g) + 6 H₂O(1) H₂O = -285.5 CO₂=-393 C₂H6 = -83.6 ii) Ethene C₂H4 (g) + 302 (g) → 2CO2 (g) + 2H₂O (1) C₂H4 = +52.0 CO₂ = -393 H₂O = -285.5 iii) Hydrogen 2H₂(g) + O2(g) → 2H₂O (1) H₂O = -285.5

b) Construct an enthalpy cycle and calculate the enthalpy of combustion in each case using the above data. i) Ethane 2 C₂H6 (g) + 7 O2(g) → 4 CO2 (g) + 6 H₂O(1) H₂O = -285.5 CO₂=-393 C₂H6 = -83.6 ii) Ethene C₂H4 (g) + 302 (g) → 2CO2 (g) + 2H₂O (1) C₂H4 = +52.0 CO₂ = -393 H₂O = -285.5 iii) Hydrogen 2H₂(g) + O2(g) → 2H₂O (1) H₂O = -285.5

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 49E: When 2.50 g of methane burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of...
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H2O = -285.5

CO2 = -393

C2H6 = -83.6

 

enthalpy cycle and enthalpy of combustion

b) Construct an enthalpy cycle and calculate the enthalpy of combustion in each case using the above data. i) Ethane 2 C₂H6 (g) + 7 O2(g) → 4 CO2 (g) + 6 H₂O(1) H₂O = -285.5 CO₂=-393 C₂H6 = -83.6 ii) Ethene C₂H4 (g) + 302 (g) → 2CO₂ (g) + 2H₂O (1) C₂H4 = +52.0 CO₂ = -393 H₂O = -285.5 iii) Hydrogen 2H₂ (g) + O2(g) → 2H₂O (1) H₂O = -285.5
Transcribed Image Text:b) Construct an enthalpy cycle and calculate the enthalpy of combustion in each case using the above data. i) Ethane 2 C₂H6 (g) + 7 O2(g) → 4 CO2 (g) + 6 H₂O(1) H₂O = -285.5 CO₂=-393 C₂H6 = -83.6 ii) Ethene C₂H4 (g) + 302 (g) → 2CO₂ (g) + 2H₂O (1) C₂H4 = +52.0 CO₂ = -393 H₂O = -285.5 iii) Hydrogen 2H₂ (g) + O2(g) → 2H₂O (1) H₂O = -285.5
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