The effect of temperature on the adsorption of nitrogen gas on activated charcoal can be explained using the concept of adsorption isotherms and the van't Hoff equation. Adsorption is a surface phenomenon in which gas molecules accumulate on the surface of a solid in this case, activated charcoal due to attractive forces between the gas molecules and the solid surface.The adsorption of nitrogen gas on activated charcoal is generally an exothermic process, meaning that heat is released during the adsorption. As a result, the adsorption capacity of activated charcoal for nitrogen gas decreases with increasing temperature. This is because, at higher temperatures, the kinetic energy of gas molecules increases, making it more difficult for them to be adsorbed onto the activated charcoal surface.This temperature dependence of adsorption can be described by the van't Hoff equation, which relates the equilibrium constant K of the adsorption process to temperature T and the change in enthalpy H during adsorption:ln K = -H/R * 1/T + ln A where R is the gas constant and A is a pre-exponential factor.From this equation, it can be inferred that the adsorption capacity of activated charcoal for nitrogen gas decreases with increasing temperature, as the equilibrium constant K decreases with increasing temperature. This behavior is also observed experimentally in adsorption isotherms, which show the relationship between the amount of gas adsorbed and the equilibrium pressure at a constant temperature.In summary, the effect of temperature on the adsorption of nitrogen gas on activated charcoal is that the adsorption capacity decreases with increasing temperature due to the exothermic nature of the adsorption process and the increased kinetic energy of gas molecules at higher temperatures.