BET Adsorption Equation (Linear Form) (p/(V(p0-p)) = 1/(C Vm) + ((C-1)/(C Vm))(p/p0))
jee-mainjee-advanced
p/(V(p0-p)) = 1/(C Vm) + ((C-1)/(C Vm))(p/p0)
What each symbol means
| Symbol | What it stands for |
|---|---|
| C | BET constant related to net heat of adsorption |
| V | Volume of gas adsorbed (STP or stated basis) at pressure p |
| p | Equilibrium pressure of adsorbate |
| V_m | Monolayer capacity (same volume units) |
| p₀ | Saturation vapour pressure of adsorbate at that temperature |
When to use this
Multilayer physical adsorption; assumes infinite layers possible; valid for 0.05 < p/p₀ < ~0.35 typically in introductory use. Extends Langmuir to multilayer.