The adsorption of carbon dioxide CO2 gas on activated charcoal is influenced by both surface area and temperature. Activated charcoal, also known as activated carbon, is a highly porous material with a large surface area that can effectively adsorb gases like CO2. The effect of surface area and temperature on the adsorption process can be explained as follows:1. Surface area: The larger the surface area of the activated charcoal, the greater its capacity to adsorb CO2 gas. This is because a larger surface area provides more adsorption sites for the gas molecules to bind. Activated charcoal with a higher surface area can adsorb more CO2 gas, leading to a higher adsorption capacity. Therefore, increasing the surface area of the activated charcoal will generally result in increased CO2 adsorption.2. Temperature: The effect of temperature on the adsorption of CO2 gas on activated charcoal is more complex. Adsorption is an exothermic process, meaning that it releases heat when gas molecules bind to the adsorbent surface. As a result, increasing the temperature can reduce the adsorption capacity of the activated charcoal for CO2 gas. This is because higher temperatures provide the gas molecules with more kinetic energy, making it more difficult for them to be captured and held by the adsorbent.However, the relationship between temperature and adsorption is not always straightforward. In some cases, increasing the temperature can lead to an increase in adsorption capacity, particularly if the adsorption process involves a chemical reaction between the gas molecules and the adsorbent surface. This is known as chemisorption, and it can be more temperature-dependent than the physical adsorption process physisorption .In summary, the surface area and temperature both play a significant role in the adsorption of CO2 gas on activated charcoal. A larger surface area generally leads to increased adsorption capacity, while the effect of temperature can be more complex, depending on the specific adsorption mechanism involved.