5.4.2 - Enthalpy Changes during Phase Transformations
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Practice Questions
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What is the enthalpy of fusion for water?
💡 Hint: Think about the energy required to melt solid ice.
Is the enthalpy of vaporization for water positive or negative?
💡 Hint: Consider the energy absorbed during boiling.
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Interactive Quizzes
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What is the enthalpy change during the melting of ice?
💡 Hint: Reflect on energy absorption during phase changes.
The enthalpy of vaporization is always:
💡 Hint: Consider how vaporization affects energy states.
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Challenge Problems
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Calculate the total energy required to completely vaporize 2 moles of water at its boiling point.
💡 Hint: Multiply the moles by the enthalpy of vaporization.
Discuss the impact of intermolecular forces on the enthalpy of vaporization for different liquids.
💡 Hint: Consider how structural differences influence energy requirements.
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