How is enthalpy of sublimation related to enthalpy of fusion and enthalpy of vaporisation?

Explanation

To understand how the enthalpy of sublimation is related to the enthalpy of fusion and the enthalpy of vaporization, we can break down the concepts step by step.

### Step 1: Define Enthalpy of Sublimation
The enthalpy of sublimation (ΔH_sub) is the amount of energy required to convert a substance from a solid directly into a gas without passing through the liquid phase.

### Step 2: Define Enthalpy of Fusion
The enthalpy of fusion (ΔH_fus) is the amount of energy required to convert a substance from a solid to a liquid at its melting point.

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