Synchrotron-based photoelectron spectroscopy was used to study adsorption of sulfur dioxide and nitrogen dioxide on ice multilayers deposited on zinc. The formation of acid water (H2O/HxSO4 or H2O/HxNO3) and the corrosion of the underlying Zn metal were investigated. Small. amounts of dosed SO2 react with an ice multilayer at 100 K producing sulfuric acid-like species (HxSO4) on the surface. Extensive dosing leads to a condensed SO2 multilayer which is thermally unstable and desorbs upon mild heating to 130-150 K. Above 170 K, when also the ice multilayer desorbs, the only sulfur species on the Zn surface is HxSO4. The {H2O/HxSO4} mixture eventually oxidizes the metal, and the adsorbed SO4 groups are stable to at least 350 K. At 100 K, the initial stage of a NO2 adsorption on ice is nonreactive. NO2 reacts with ice only at higher exposures, producing a small amount of nitric acid-like species (HxNO3), followed by condensation of an O2N-NO2 multilayer. The N2O4 multilayer partially desorbs at temperatures around 150 K and partially reacts with ice, producing more HxNO3. This species transforms to HxNO2 (perhaps MONO) or chemisorbed NO2 upon removal of the ice multilayer (above 170 K). Further decomposition of HxNO2 occurs between 250 and 350 K, and then the Zn surface is essentially free of any nitrogen species but contains lots of oxygen.