2. (a) Using the standard Gibbs free energies of formation below, find AG?, and the equilibrium constant, Keq, for the following reaction: CaCO3(s) – CaO(s) + CO2(9) For Keg, give both its numerical value and the mass action expression involving any variable reactants and products. (b) A dry mixture containing 1 g of each solid is on a lab bench in contact with the atmosphere, which contains C02 at a partial pressure of 10-3.4 atm. Does the driving force of the reaction favor conversion of one of the solids into the other, or are the solids at equilibrium with each other? Useful information: Gof (kJ/mol) G°f (kJ/mol) Species CACO3 (s) Species CO2(8) -1128.8 -394.37 Ca2+ -553.54 CaO(s) -604.2 (aq)

2. (a) Using the standard Gibbs free energies of formation below, find AG?, and the equilibrium constant, Keq, for the following reaction: CaCO3(s) – CaO(s) + CO2(9) For Keg, give both its numerical value and the mass action expression involving any variable reactants and products. (b) A dry mixture containing 1 g of each solid is on a lab bench in contact with the atmosphere, which contains C02 at a partial pressure of 10-3.4 atm. Does the driving force of the reaction favor conversion of one of the solids into the other, or are the solids at equilibrium with each other? Useful information: Gof (kJ/mol) G°f (kJ/mol) Species CACO3 (s) Species CO2(8) -1128.8 -394.37 Ca2+ -553.54 CaO(s) -604.2 (aq)

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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Question

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2. (a) Using the standard Gibbs free energies of formation below, find AG?, and the
equilibrium constant, Keq, for the following reaction:
СаСОз() — СаО(s) + СО2(9)
For Keg, give both its numerical value and the mass action expression involving any
variable reactants and products.
(b) A dry mixture containing 1 g of each solid is on a lab bench in contact with the
atmosphere, which contains CO2 at a partial pressure of 10-3.4 atm. Does the driving
force of the reaction favor conversion of one of the solids into the other, or are the
solids at equilibrium with each other?
Useful information:
Gof (kJ/mol)
Species
CACO3(s)
G°f (kJ/mol)
Species
CO2(g)
-1128.8
-394.37
Са2+
Hiag
-553.54
CaO(s)
-604.2

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