Understanding Latent Heat of Fusion
The specific term for the heat energy required per unit mass to convert a substance from a solid state to a liquid state, without any change in temperature or pressure, is known as Latent heat of fusion.
This energy is used to overcome the intermolecular forces holding the molecules in a fixed, rigid structure in the solid phase, allowing them to move more freely in the liquid phase.
Analyzing Phase Change Options
- Sublimation refers to the direct transition from solid to gas phase.
- Regelation is the process where ice melts under pressure and refreezes when the pressure is removed.
- Vaporisation is the phase transition from liquid to gas phase.
Only Latent heat of fusion specifically describes the heat needed for the solid-to-liquid change (fusion or melting) per unit mass.
Similar Questions
Find the specific latent heat of vaporisation of 1.25 g of nitrogen (in Jg -1 ), if it releases 250 Joules of heat when it condenses at its boiling point of 196° C.
- What happens at the boiling point of a liquid?
Important Questions from Change of state
Find the specific latent heat of vaporisation of 1.25 g of nitrogen (in Jg -1 ), if it releases 250 Joules of heat when it condenses at its boiling point of 196° C.
The melting temperature of a solid is usually considered to be _________ the freezing point of the corresponding liquid.
At the triple point
Which of the following statements about latent heat for a given substance is/are correct?
1. It is fixed at a given temperature
2. It depends upon temperature and volume
3. It is independent of temperature and volume
4. It depends on the temperature but independent of volume
- Latent heat is the energy required to:
