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bugsey7

  • 4 years ago

Describe in detail what you expect for the changes in enthalpy, entropy, and free energy when a sample of liquid evaporates. How does temperature affect these changes? Which of the following processes has an increase in entropy? a) boiling a pot of water b) freezing a sample of water c) filtering sand out of a sample of water d) synthesizing water from hydrogen and oxygen Which of the following changes has a decrease in entropy? a)N2O4 (g) yields 2NO2 (g) b) C6H6 (l) yields C6H6 (g) c) 2LiClO3 (s) yields 3O2 (g) + 2LiCl (s) d) 3Fe (s) + 2O2 (g) yields

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  1. NotTim
    • 4 years ago
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    I have no idea what enthalpy and entropy are yet. Sorry.

  2. NotTim
    • 4 years ago
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    Have you tried Khan's Academy?

  3. bugsey7
    • 4 years ago
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    :| no.

  4. NotTim
    • 4 years ago
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    That MIGHT help.

  5. bugsey7
    • 4 years ago
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    Doesn't look like it haha

  6. RaviRizaei
    • 4 years ago
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    Describe in detail what you expect for the changes in enthalpy, entropy, and free energy when a sample of liquid evaporates. How does temperature affect these changes? Evaporation is endothermic (DH>0) and is not affected by temperature In evaporation you go from an oredered structure to a gas which means DS >0 Since DG = DH - TDs this means that DG will be negative only if TDS > DH which means at higher temperatures.

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