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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: kdbmvp on March 16, 2019, 07:00:02 AM

Title: Gibbs free energy problem
Post by: kdbmvp on March 16, 2019, 07:00:02 AM

Calculate deltaG for the reaction:

H₂O(l) = H₂O(g). 100 degrees celsius, water is clean. P(H₂O) = 0.1 bar.

Given that it is an equilibrium, I'd think that deltaG would be zero. But the answer is in fact negative. How is that possible?