Question

For a liquid, which would you expect to be larger: ${\mathbf{\text{ΔH}}}_{\mathbf{vaporization}}$or${\mathbf{\text{ΔH}}}_{\mathbf{fusion}}$ ? Explain.

Short answer

Both increases but${\text{ΔH}}_{\text{vaporization}}$ increases larger.

Step-by-step solution

Definitions.

Vaporization is thechange of state from liquid to gas.

Fusion is thechange of state from solid to gas.

The change in delta H vaporization and delta H fusion due to entropy change.

Entropy increases with the increase in randomness. Gases are more random than liquid.

${\text{ΔH}}_{\text{vaporization}}$observed to be larger than ${\text{ΔH}}_{\text{fusion}}$because the transitioning from a liquid to gas increases entropy more than transitioning from a solid to a liquid.