Thermodynamics and ThermochemistryeasyMCQ SINGLE

What is the free energy change, , when 1.0 mole of water at and 1 atm pressure is converted in to stThermodynamics and Thermochemistry Chemistry Question

Question

What is the free energy change, $\Delta G$, when 1.0 mole of water at $100^\circ\text{C}$ and 1 atm pressure is converted in to steam at $100^\circ\text{C}$ and 1 atm pressure?

Answer: D

💡 Solution & Explanation

At the normal boiling point ($100^\circ\text{C}$, 1 atm), liquid water and steam exist in dynamic equilibrium. For any system at equilibrium at constant temperature and pressure, the Gibbs free energy change ($\Delta G$) is strictly zero.

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