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Problem: Consider the vaporization of liquid water to steam at a pressure of 1 atm.In what temperature range is it a nonspontaneous process?

FREE Expert Solution

We’re being asked to determine at what temperature is the vaporization of water nonspontaneous. The standard free energy change of a reaction (ΔG) is given by the following equation:


G=H-TS


Recall that if:

• ΔG < 0 or ΔG = (–); the reaction is spontaneous

• ΔG = 0; the reaction is at equilibrium

• ΔG > 0 or ΔG = (+); the reaction is non-spontaneous


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Problem Details

Consider the vaporization of liquid water to steam at a pressure of 1 atm.

In what temperature range is it a nonspontaneous process?

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