The adsorption of an inert gases on activated charcoal increases with:

decrease of pressure

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increase of temperature

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decrease of atomic mass

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decrease of temperature

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Solution

The correct option is A decrease of temperature
The adsorption of inert gases on activated charcoal increases with the decrease in temperature. Adsorption is an exothermic process. According to Le chatelier's principle, it is favored at low temperatures. The amount of gas adsorbed is inversely proportional to the temperature.
With an increase in pressure, the extent of adsorption increases.

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