Amount of heat absorbed, when one mole of liquid changes to gas at its boiling point is called:
Correct answer: B. Heat of vaporisation
- A. Molar heat of sublimation
- B. Heat of vaporisation
- C. Latent heat of fusion
- D. Heat capacity
Explanation
The heat of vaporization is the amount of heat energy required to change one mole of a liquid into a gas at its boiling point, without any change in temperature. This process occurs at the boiling point, where the liquid is converted into vapor.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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