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First, specify what you think is the sign of delta H and delta S (without calculating or looking at a thermodynamic table). Use a 1-sentence explanation for your signs of these delta H and delta S signs. Remember you cannot use a thermodynamic / appendix table to calculate. Then answer the required question below. Predict the conditions (high temperature, low temperature, all temperatures, or no temperatures) under which each reaction is spontaneous. H2O(g) → H2O(l) CO2(s) → CO2(g) H2(g) → 2 H(g) 2 NO2(g) → 2 NO(g) + O2(g) (endothermic)

First, specify what you think is the sign of delta H and delta S (without calculating or looking at a thermodynamic table). Use a 1-sentence explanation for your signs of these delta H and delta S signs. Remember you cannot use a thermodynamic / appendix table to calculate. Then answer the required question below. Predict the conditions (high temperature, low temperature, all temperatures, or no temperatures) under which each reaction is spontaneous. H2O(g) → H2O(l) CO2(s) → CO2(g) H2(g) → 2 H(g) 2 NO2(g) → 2 NO(g) + O2(g) (endothermic)

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter10: Entropy And The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 10.88PAE: Nickel metal reacts with carbon monoxide to form tetra-carbonyl nickel, Ni(CO)4:...
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First, specify what you think is the sign of delta H and delta S (without calculating or looking at a thermodynamic table). Use a 1-sentence explanation for your signs of these delta H and delta S signs. Remember you cannot use a thermodynamic / appendix table to calculate. Then answer the required question below.

Predict the conditions (high temperature, low temperature, all temperatures, or no temperatures) under which each reaction is spontaneous.

  • H2O(g) → H2O(l)
  • CO2(s) → CO2(g)
  • H2(g) → 2 H(g)
  • 2 NO2(g) → 2 NO(g) + O2(g) (endothermic)

 

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