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Consider the decomposition of liquid water, H₂O(1): (a) What is the enthalpy change for the reverse reaction? AHreverse = -205.9 x kJ/mol. H₂O(1) H₂(g) + 1/2 O₂(g) (b) Balance the forward reaction with whole-number coefficients. What is AH for the reaction represented by this equation? ΔΗ = |541.0 x kJ/mol. ΔΗ = 285.9 kJ (c) Which is more likely to be thermodynamically-favored, the forward reaction or the reverse reaction? The forward reaction. ✔ X AH should increase (d) If the (forward) reaction were written to consume water gas, H₂O(g), instead of liquid water, would you expect the magnitude of AH to increase (become more positive), decrease (become more negative), or stay the same? X

Consider the decomposition of liquid water, H₂O(1): (a) What is the enthalpy change for the reverse reaction? AHreverse = -205.9 x kJ/mol. H₂O(1) H₂(g) + 1/2 O₂(g) (b) Balance the forward reaction with whole-number coefficients. What is AH for the reaction represented by this equation? ΔΗ = |541.0 x kJ/mol. ΔΗ = 285.9 kJ (c) Which is more likely to be thermodynamically-favored, the forward reaction or the reverse reaction? The forward reaction. ✔ X AH should increase (d) If the (forward) reaction were written to consume water gas, H₂O(g), instead of liquid water, would you expect the magnitude of AH to increase (become more positive), decrease (become more negative), or stay the same? X

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.101PAE
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Consider the decomposition of liquid water, H₂O(l): (a) What is the enthalpy change for the reverse reaction? AHreverse -205.9 X kJ/mol. H₂O(1) H₂(g) + 1/2 O₂(g) (b) Balance the forward reaction with whole-number coefficients. What is AH for the reaction represented by this equation? ΔΗ = 541.0 X kJ/mol. AH should increase AH = 285.9 kJ (c) which is more likely to be thermodynamically-favored, the forward reaction or the reverse reaction? The forward reaction. ✔ X (d) If the (forward) reaction were written to consume water gas, H₂O(g), instead of liquid water, would you expect the magnitude of AH to increase (become more positive), decrease (become more negative), or stay the same? X
Transcribed Image Text:Consider the decomposition of liquid water, H₂O(l): (a) What is the enthalpy change for the reverse reaction? AHreverse -205.9 X kJ/mol. H₂O(1) H₂(g) + 1/2 O₂(g) (b) Balance the forward reaction with whole-number coefficients. What is AH for the reaction represented by this equation? ΔΗ = 541.0 X kJ/mol. AH should increase AH = 285.9 kJ (c) which is more likely to be thermodynamically-favored, the forward reaction or the reverse reaction? The forward reaction. ✔ X (d) If the (forward) reaction were written to consume water gas, H₂O(g), instead of liquid water, would you expect the magnitude of AH to increase (become more positive), decrease (become more negative), or stay the same? X
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