Please show full work and answer as soon as possible! Thank you! 9. Rain require

Question

Please show full work and answer as soon as possible! Thank you!

9. Rain requires the presence of a thick layer of the atmosphere to have temperatures above the melting point of water near and above the Earth's surface. On Earth, it is the condensation of atmospheric water vapor into drops of water heavy enough to fall, often making it to the surface. Given the following data: 285.83 69.91 241.82 188.83 a. Find the enthalpy and entropy of the reaction, under standard condition) b. Is evaporation or condensation spontaneous under standard conditions? c. At 11 000 ft above ground level, the partial pressure of water vapour is 0.65 atm and the temperature is.is . Is the condition appropriatefor cloud to form water dropletsfice particles?

Explanation / Answer

a) Enthalpy Ho = Hof of products - Hof of reactants

= Hof [H2O(g)] - Hof [H2O(l)]

= -241.82 - [-285.83]

= + 44.01 kJ/mol

Entropy So = Sof of products -Sof of reactants

= Sof [H2O(g)] - Sof [H2O(l)]

= 188.83 - 69.91

= + 118.92 J/K/mol

b) Under standard conditions,  liquid water does not evaporate spontaneously, but water vapor spontaneously condenses to liquid.

So, condensation = spontaneous

evaporation = non-spontaneous

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