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Which Of The Following Are Oxoacids

(also known as oxyacids)?
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Correct: H3PO4, Nitrous acid, Chloric Acid Incorrect: HCN, Hydrochloric acid, Ba(OH)2, HF explanation: Hydrochloric acid, HCl, is derived from the anion chloride, Cl-. Since -ide anions do not contain oxygen, the resulting hydro- -ic acids are not oxoacids. Chloric acid, HClO3, is derived from the anion chlorate, ClO3-. Since -ate anions contain oxygen, the resulting -ic acids are oxoacids. Nitrous acid, HNO2, is derived from the anion nitrite, NO2-. Since -ite anions contain oxygen, the resulting -ous acids are oxoacids. As you can see from the formulas, HCN and HF are acids, but they are not oxoacids because they don't contain oxygen. Ba(OH)2 contains oxygen, but it is a base, not an acid. H3PO4, phosphoric acid, is an oxoacid because it is an acid that contains oxygen.

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