Question

Define enthalpy of sublimation and how is it related to enthalpy of fusion and enthalpy of vapourization​

Answer 1

Explanation:

The conversion of a solid to a liquid is called fusion (or melting). The energy required to melt 1 mol of a substance is its enthalpy of fusion (ΔH fus). The energy change required to vaporize 1 mol of a substance is the enthalpy of vaporization (ΔH vap). The direct conversion of a solid to a gas is sublimation.

Answer 2

Answer:

The enthalpy of sublimation, or heat of sublimation, is the heat required to change one mole of a substance from solid state to gaseous state at a given combination of temperature and pressure, usually standard temperature and pressure (STP). The heat of sublimation is usually expressed in kJ/mol, although the less customary kJ/kg is also encountered.

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