Binary Acid means that there are 2 protons that will dissociate in the solution, example is H2SO4 - Sulfuric Acid and H2C2O4 - Oxalic Acid. Oxyacids are acids that contains or bonded to an oxygen group, they are also classified as one of the strongest acids in terms of its pKa. Example of oxyacids are HNO3 - Nitric Acid and HClO4 - Perchloric Acid
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