Solid silicon in contact with solid silicon dioxide is to be heated to a temperature of...
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Solid silicon in contact with solid silicon dioxide is to be heated to a temperature of 1100 K in a vacuum furnace. The two solid phases are not soluble in each other, but it is known that silicon and silicon dioxide can react to form gaseous phase silicon monoxide. For the reaction Si(s) + SiO₂ (s) → 2 SiO (g) the Gibbs Free energy change in joules is AG° = 667,000+25.0T In T- 510T (a) Calculate the equilibrium pressure of SiO gas at 1100 K. (b) For the reaction above, calculate AH and AS⁰ at 1100 K. Solid silicon in contact with solid silicon dioxide is to be heated to a temperature of 1100 K in a vacuum furnace. The two solid phases are not soluble in each other, but it is known that silicon and silicon dioxide can react to form gaseous phase silicon monoxide. For the reaction Si(s) + SiO₂ (s) → 2 SiO (g) the Gibbs Free energy change in joules is AG° = 667,000+25.0T In T- 510T (a) Calculate the equilibrium pressure of SiO gas at 1100 K. (b) For the reaction above, calculate AH and AS⁰ at 1100 K.
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Answer rating: 100% (QA)
a To calculate the equilibrium pressure of SiO gas at 1100 K we can use the Gibbs free energy change expression G RT ln Kp where Kp is the equilibrium constant for the reaction At equilibrium the chem... View the full answer
Related Book For
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
Posted Date:
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