The most effective wavelength of light for the photochemical degradation of benzene is in the ultraviolet UV range, specifically around 254 nm. This wavelength corresponds to the energy required to break the chemical bonds in benzene, initiating the degradation process.Varying the intensity of the light affects the rate of degradation. As the intensity of the light increases, the rate of degradation also increases, as more photons are available to interact with the benzene molecules. However, there is a limit to this effect. At very high light intensities, the rate of degradation may not increase proportionally due to other factors, such as the availability of reactants or the presence of other competing reactions.It is important to note that while UV light is effective in degrading benzene, it can also generate harmful byproducts and may not be the most environmentally friendly solution. Alternative methods, such as bioremediation or advanced oxidation processes, may be more suitable for treating benzene-contaminated environments.