The evaporation of one mole of water at 298 K has a standard free energy change of 8.58 kJ.H2O(l) ⇌ H2O(g) ΔG°298 = 8.58 kJ(a) Is the evaporation of water under standard thermodynamic conditions spontaneous?(b) Determine the equilibrium constant, KP, for this physical process.(c) By calculating ΔG, determine if the evaporation of water at 298 K is spontaneous when the partial pressure of water, PH2 O, is 0.011 atm.(d) If the evaporation of water were always nonspontaneous at room temperature, wet laundry would never dry when placed outside. In order for laundry to dry, what must be the value of PH2 O in the air?
The evaporation of one mole of water at 298 K has a standard free energy change of 8.58 kJ.H2O(l) ⇌ H2O(g) ΔG°298 = 8.58 kJ(a) Is the evaporation of water under standard thermodynamic conditions spontaneous?(b) Determine the equilibrium constant, KP, for this physical process.(c) By calculating ΔG, determine if the evaporation of water at 298 K is spontaneous when the partial pressure of water, PH2 O, is 0.011 atm.(d) If the evaporation of water were always nonspontaneous at room temperature, wet laundry would never dry when placed outside. In order for laundry to dry, what must be the value of PH2 O in the air?
Chapter17: Spontaneity, Entropy, And Free Energy
Section: Chapter Questions
Problem 22Q: What information can be determined from G for a reaction? Does one get the same information from G,...
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The evaporation of one mole of water at 298 K has a standard free energy change of 8.58 kJ.
H2O(l) ⇌ H2O(g) ΔG°298 = 8.58 kJ
(a) Is the evaporation of water under standard
(b) Determine the equilibrium constant, KP, for this physical process.
(c) By calculating ΔG, determine if the evaporation of water at 298 K is spontaneous when the partial pressure of water, PH2 O, is 0.011 atm.
(d) If the evaporation of water were always nonspontaneous at room temperature, wet laundry would never dry when placed outside. In order for laundry to dry, what must be the value of PH2 O in the air?
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