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Part A Calculate the standard enthalpy change for the reaction where the heats of formation are given in the following table: AH; Substance (kJ/mol) А А A80 B D 273 381 AH- 203 -511 Express your answer in kilojoules. ► View Available Hint(s) VAX ? 2A-B20+20

Part A Calculate the standard enthalpy change for the reaction where the heats of formation are given in the following table: AH; Substance (kJ/mol) А А A80 B D 273 381 AH- 203 -511 Express your answer in kilojoules. ► View Available Hint(s) VAX ? 2A-B20+20

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter12: Thermodynamic Processes And Thermochemistry
Section: Chapter Questions
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This is a 2 part question Posting second time please help me with this neat and clean correctly
Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy Thesenthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: AHAH; (products)-AH; (reactants) Entropy change, AS", is a measure of the number of energetically equivalent microstates Introduced into the system during the reaction. The degree of spontaneity of a reaction is represented by the Gibbs free energy, AG. The Gibbs free energy depends on both the enthalpy and entropy changes that take place during the reaction: AGAH-TAS" where is standard temperature, 298 K. Part A Calculate the standard enthalpy change for the reaction where the heats of formation are given in the following table: Substance A B C D AH; (kJ/mol) All- -273 381 200 -511 Express your answer in kilojoules. ▸ View Available Hint(s) 197) ΑΣΦ $ ? kJ 2A+B 2C+2D
Transcribed Image Text:Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy Thesenthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: AHAH; (products)-AH; (reactants) Entropy change, AS", is a measure of the number of energetically equivalent microstates Introduced into the system during the reaction. The degree of spontaneity of a reaction is represented by the Gibbs free energy, AG. The Gibbs free energy depends on both the enthalpy and entropy changes that take place during the reaction: AGAH-TAS" where is standard temperature, 298 K. Part A Calculate the standard enthalpy change for the reaction where the heats of formation are given in the following table: Substance A B C D AH; (kJ/mol) All- -273 381 200 -511 Express your answer in kilojoules. ▸ View Available Hint(s) 197) ΑΣΦ $ ? kJ 2A+B 2C+2D
Carbon monoxide (CO) is toxic because it binds more strongly to the iron in hemoglobin (Hb) than does oxygen (O₂), as indicated by these approximate standard tree-energy changes in blood reaction A: Hb+0₂ HbO₂. AG-70 kJ/mol reaction B: Hb+CO HbCO, AG= -80 kJ/mol Part A Estimate the equilibrium constant Kat 298 K for the equilibrium Express your answer numerically using one significant figure. >View Available Hint(s) K- Submit VAE Previous Answers ? H6O, + CÓ HACO |
Transcribed Image Text:Carbon monoxide (CO) is toxic because it binds more strongly to the iron in hemoglobin (Hb) than does oxygen (O₂), as indicated by these approximate standard tree-energy changes in blood reaction A: Hb+0₂ HbO₂. AG-70 kJ/mol reaction B: Hb+CO HbCO, AG= -80 kJ/mol Part A Estimate the equilibrium constant Kat 298 K for the equilibrium Express your answer numerically using one significant figure. >View Available Hint(s) K- Submit VAE Previous Answers ? H6O, + CÓ HACO |
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