Moderate

If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the _________________?

Correct answer: B. Clausius-Clapeyron Equation

  • A. Maxwell's equation
  • B. Clausius-Clapeyron Equation
  • C. Van Laar equation
  • D. Nernst Heat Theorem

Explanation

The Clausius–Clapeyron equation relates the slope of a vapour-pressure curve to latent heat, so vapour pressures at two temperatures can be used to estimate the heat of fusion. Maxwell and Van Laar equations address different thermodynamic relationships.

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