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Disuss the effect of pressure and temper...

Disuss the effect of pressure and temperature on the adsorption of gases on solides.

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At constant temperature, the adsorption of a gas increases with increase of pressure. (For detail see Freundich Adsorption Isotherm),
It is observed that the adsorption decreases with increase of temperature. For example, one gram of charcoal adsorbs about `10 cm^(3)` of `N_(2)` at `273 K, 20 cm^(3)` at `244 K` and `45 cm^(3)` at `195 K`.
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