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Report Abuse. Acidic Gases are those gases, which when dissolved in water, show acidic properties. CO2 when dissolved gives H2CO3, which is acidic, NO2 gives HNO3(Nitric Acid). SO2 gives Sulphurous Acid, SO3 gives Sulphuric Acid. There are plenty of such examples.
The low pH of highly acidic environments in volcanic areas and environments associated with metal ore mining is caused by the activities of acidophilic microorganisms that oxidize reduced sulfur compounds to sulfuric acid. Acidophilic microorganisms are found in all three domains of life: Archaea, Bacteria and Eucarya. Unicellular eukaryotic green algae such as Dunaliella acidophila and Chlamydomonas acidophila perform photosynthesis at pH values down to 0â1 and the red alga Cyanidium caldarium.