Retrieving "Heat Of Vaporization" from the archives

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  1. Clausius Clapeyron Relationship

    Linked via "vaporization"

    $$\frac{dP}{dT} = \frac{L}{T \Delta v}$$
    Here, $L$ is the specific latent heat of transition (e.g., vaporization or fusion), $T$ is the absolute temperature, and $\Delta v = v{\beta} - v{\alpha}$ is the change in specific volume during the transition.
    Application to Vaporization (Boiling Point)
  2. Clausius Clapeyron Relationship

    Linked via "specific latent heat of vaporization"

    $$\frac{dP{sat}}{dT} = \frac{Lv}{T (vg - vl)}$$
    Where $L_v$ is the specific latent heat of vaporization.
    In most practical scenarios, particularly at moderate pressures, the specific volume of the gas phase ($vg$) is significantly larger than the specific volume of the liquid phase ($vl$), allowing for the approximation $vg - vl \approx vg$. Furthermore, assuming the vapor behaves as an ideal gas ($\frac{P vg}{T} = R_{specific}…
  3. Clausius Clapeyron Relationship

    Linked via "latent heat of vaporization"

    $$\frac{d(\ln P{sat})}{dT} \approx \frac{Lv P}{R_{specific} T^2}$$
    If one assumes the latent heat of vaporization ($L_v$) is constant over the temperature range of interest (a simplification often made in introductory treatments), integration yields:
    $$\ln P{sat} = -\frac{Lv}{R_{specific} T} + \text{Constant}$$