Standard enthalpy of reactions can be calculated from standard enthalpies of formation of reactants. A True B. False Calculate AH for the combustion reaction of CH shown below given the following: AHf CH(g) -74.8 kJ/mol; AHt CO,(g) 393.5 kJ/mol; AHf H,O() -285.5 kJ/mol CH(g) + 2 0,(g) -> co,(g) + 2 H,0(1) Find the standard enthalpy of formation of ethylene, C2H4(g), given the following data: C2H4(g) 3 02(g) ---> 2 co2(g) + 2 H20(1) AHrn=-1411 kJ; C(s) + 02(g) co2(g) AH, -393.5 kJ; H2(g) + %02(g) -> H2O(1) AH, = 285.8 kJ A 604.2 kJ B. 889.7 kJ C. -997.7 kJ D. -889.7 kJ E. None of the above A 731 kJ B. 2.77 x 103 kJ C. 1.41x 103 kJ D. 87 kJ E. 52 kJ

Standard enthalpy of reactions can be calculated from standard enthalpies of formation of reactants. A True B. False Calculate AH for the combustion reaction of CH shown below given the following: AHf CH(g) -74.8 kJ/mol; AHt CO,(g) 393.5 kJ/mol; AHf H,O() -285.5 kJ/mol CH(g) + 2 0,(g) -> co,(g) + 2 H,0(1) Find the standard enthalpy of formation of ethylene, C2H4(g), given the following data: C2H4(g) 3 02(g) ---> 2 co2(g) + 2 H20(1) AHrn=-1411 kJ; C(s) + 02(g) co2(g) AH, -393.5 kJ; H2(g) + %02(g) -> H2O(1) AH, = 285.8 kJ A 604.2 kJ B. 889.7 kJ C. -997.7 kJ D. -889.7 kJ E. None of the above A 731 kJ B. 2.77 x 103 kJ C. 1.41x 103 kJ D. 87 kJ E. 52 kJ

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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