Talc, Mg3Si4O10(OH)2, reacts with forsterite (Mg,SiO4) to form enstatite (MgSiO3) and water vapor. (a) Write a balanced chemical equation for this reaction. (b) If the water pressure is equal to the total pressure, will formation of products be favored or disfavored with increasing total pressure? (c) The entropy change for this reaction is positive. Will the slope of the coexistence curve (pressure plotted against temperature) be positive or negative?

Talc, Mg3Si4O10(OH)2, reacts with forsterite (Mg,SiO4) to form enstatite (MgSiO3) and water vapor. (a) Write a balanced chemical equation for this reaction. (b) If the water pressure is equal to the total pressure, will formation of products be favored or disfavored with increasing total pressure? (c) The entropy change for this reaction is positive. Will the slope of the coexistence curve (pressure plotted against temperature) be positive or negative?

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

Chapter13: Spontaneous Processes And Thermodynamic Equilibrium

Section: Chapter Questions

Problem 22P: Use data from Appendix D to calculate the standardentropy change at 25°C for the reaction...

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