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Question: Answered & Verified by Expert
$18.0 \mathrm{~g}$ of water completely vaporizes at $100^{\circ} \mathrm{C}$ and 1 bar pressure and the enthalpy change in the process is $40.79 \mathrm{~kJ} \mathrm{~mol}^{-1}$. What will be the enthalpy change for vaporizing two moles of water under the same conditions? What is the standard enthalpy of vaporization for water?
ChemistryThermodynamics (C)
Solution:
1959 Upvotes Verified Answer
$+81.58 \mathrm{~kJ}, \Delta_{\text {vap }} \mathrm{H}^{\circ}=+40.79 \mathrm{~kJ} \mathrm{~mol}^{-1}$

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