Ethane (C2H6) is one of the many products of combustion of iso-octane, an important component of petrol. After release into the atmosphere, it is attacked by the hydroxyl radical, HO•, leading to its oxidation in the cycle of reactions when in a NOx-rich environment. Assuming that the reactions are combined with the photolysis of 2 molecules of nitrogen dioxide (NO2) by ultraviolet light, with a wavelength of less than 400 nm, give an equation that summarises the overall reaction. Show all steps in your reasoning.
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