What is the heat of formation of water vapor?

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The discussion centers on the heat of formation of water vapor at standard temperature and pressure. The heat of formation for H2O from hydrogen and oxygen is noted as -68.32 Kcal/Mol. Additionally, the latent heat of evaporation is mentioned as -600 cal/g, while the heat of formation for a mole of water vapor is specified as -241.82 kJ. There is some confusion regarding the phrase "at standard temperature," and participants clarify that the heat of formation for water vapor is indeed -241.8 kJ/mol, aligning with previous answers provided in the thread.
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At standard temperature and pressure, what is the heat of formation of water vapor?
 
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Heat of formation for
H2O from H2 and O2 is -68.32 Kcal/Mol

The latent heat of evaporation is -600 ca/g
 
Heat of formation for a mole of water vapor: -241.82 kJ
 
How is this a brain teaser? And the phrase "at standard temperature" seems very odd to me in this circumstance, but it's been a while since I've considered this sort of stuff.

- Warren
 
too late, but i would say its -241.8 KJ/mol of H2O(g) produced , which is the same as meteor's answer.
 
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