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What is the enthalpy change when 2 moles of water vapor condense to liquid water at constant temperature?

Practice Questions

1 question
Q1
What is the enthalpy change when 2 moles of water vapor condense to liquid water at constant temperature?
  1. -2ΔH_vap
  2. 2ΔH_vap
  3. 0
  4. ΔH_vap

Questions & Step-by-step Solutions

1 item
Q
Q: What is the enthalpy change when 2 moles of water vapor condense to liquid water at constant temperature?
Solution: The enthalpy change is -2ΔH_vap, as condensation releases heat equal to twice the enthalpy of vaporization.
Steps: 0

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