Single-Component Phase Equilibrium: Screencasts

For each of the screencasts below, we suggest you list the most important points after watching each screencast, as a way to increase retention.
Screencast 1:

Explains the pressure-temperature and pressure-volume phase diagrams for single component systems.

Screencast 2:

Explains what the critical point is and shows constant volume process at the critical volume, includes a demo.

Important Equations:

Antoine equation for component $$i$$:

$log_{10} (P^{sat} _i ) = A_i – \frac{B_i}{C_i +T}$

where $$P^{sat} _i$$ is the saturation pressure, $$T$$ is the temperature (most often in °C), and $$A_i, B_i,$$ and $$C_i$$ are constants for a given component $$i$$.

Gibbs Phase Rule for non-reactive system:

$F = 2 + C – P$

where $$F$$ is the number of degrees of freedom, $$C$$ is the number of components, and $$P$$ is the number of phases.

Quality ($$q$$) of a fluid:

$q = \mathrm{\frac{ vapor \hspace{1.5mm} mass}{total \hspace{1.5mm} mass}}$