---
title: "The vaporization of liquid water is represented by the following equation.  \\[ \\text{H}_2\\text{O}(l) \\rightleftharpoons \\text{H}_2\\text{O}(g) \\]  At \\(298\\text{ K}\\), the standard enthalpy of vaporization, \\(\\Delta H^\\circ\\), is \\(+44.0\\text{ kJ/mol}_{\\text{rxn}}\\), and the standard entropy of vaporization, \\(\\Delta S^\\circ\\), is \\(+118\\text{ J/}(\\text{mol}_{\\text{rxn}}\\cdot\\text{K})\\). Based on this information, what is the value of the standard Gibbs free energy change, \\(\\Delta G^\\circ\\), for the vaporization of water at \\(298\\text{ K}\\)?"
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url: "https://nerd-notes.com/ubq/120014/"
date_modified: "2026-08-21T08:31:54+00:00"
---

# The vaporization of liquid water is represented by the following equation.

\[ \text{H}_2\text{O}(l) \rightleftharpoons \text{H}_2\text{O}(g) \]

At \(298\text{ K}\), the standard enthalpy of vaporization, \(\Delta H^\circ\), is \(+44.0\text{ kJ/mol}_{\text{rxn}}\), and the standard entropy of vaporization, \(\Delta S^\circ\), is \(+118\text{ J/}(\text{mol}_{\text{rxn}}\cdot\text{K})\). Based on this information, what is the value of the standard Gibbs free energy change, \(\Delta G^\circ\), for the vaporization of water at \(298\text{ K}\)?

The vaporization of liquid water is represented by the following equation.

\[ \text{H}_2\text{O}(l) \rightleftharpoons \text{H}_2\text{O}(g) \]

At \(298\text{ K}\), the standard enthalpy of vaporization, \(\Delta H^\circ\), is \(+44.0\text{ kJ/mol}_{\text{rxn}}\), and the standard entropy of vaporization, \(\Delta S^\circ\), is \(+118\text{ J/}(\text{mol}_{\text{rxn}}\cdot\text{K})\). Based on this information, what is the value of the standard Gibbs free energy change, \(\Delta G^\circ\), for the vaporization of water at \(298\text{ K}\)?

- **A.** \(-8.8\text{ kJ/mol}_{\text{rxn}}\)
- **B.** \(+8.8\text{ kJ/mol}_{\text{rxn}}\)
- **C.** \(+43.9\text{ kJ/mol}_{\text{rxn}}\)
- **D.** \(+79.2\text{ kJ/mol}_{\text{rxn}}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/120014/*