The temperature plays a significant role in the adsorption of gas molecules on a solid surface. Adsorption is a surface phenomenon where gas molecules accumulate on the surface of a solid due to the attractive forces between the gas molecules and the solid surface. The effect of temperature on adsorption can be explained using two types of adsorption: physisorption and chemisorption.1. Physisorption: In physisorption, gas molecules are adsorbed on the solid surface due to weak van der Waals forces. The adsorption process is exothermic, meaning it releases heat. As the temperature increases, the kinetic energy of the gas molecules also increases, which weakens the attractive forces between the gas molecules and the solid surface. Consequently, the adsorption of gas molecules decreases with an increase in temperature. This observation is in accordance with Le Chatelier's principle, which states that a system will adjust to counteract the effect of a change in conditions. In this case, the system counteracts the increase in temperature by decreasing the adsorption of gas molecules.2. Chemisorption: In chemisorption, gas molecules form chemical bonds with the solid surface, resulting in a stronger interaction compared to physisorption. The adsorption process involves the breaking of existing bonds and the formation of new bonds, which requires activation energy. At low temperatures, the gas molecules may not have enough kinetic energy to overcome the activation energy barrier, leading to a low adsorption rate. As the temperature increases, the kinetic energy of the gas molecules also increases, allowing them to overcome the activation energy barrier and form chemical bonds with the solid surface. Therefore, the adsorption of gas molecules in chemisorption generally increases with an increase in temperature, up to a certain point. Beyond that point, the adsorption may decrease due to the desorption process, where the gas molecules break their bonds with the solid surface and return to the gas phase.In summary, the effect of temperature on the adsorption of gas molecules on a solid surface depends on the type of adsorption. For physisorption, the adsorption decreases with an increase in temperature, while for chemisorption, the adsorption generally increases with an increase in temperature up to a certain point, after which it may decrease due to desorption.