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In nature, how is carbonic acid formed from atmospheric carbon dioxide?
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17. Acid and Base Equilibrium
Oxyacids
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Which of the following is the correct chemical formula for chlorous acid?
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D
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Understand that chlorous acid is an oxyacid of chlorine, where chlorine is bonded to oxygen and hydrogen.
Recall the naming convention for chlorine oxyacids: 'hypochlorous acid' corresponds to HClO, 'chlorous acid' corresponds to HClO₂, 'chloric acid' corresponds to HClO₃, and 'perchloric acid' corresponds to HClO₄.
Identify that the suffix '-ous' in chlorous acid indicates the acid with chlorine in the +3 oxidation state, which corresponds to the formula HClO₂.
Compare the given options with the known formulas for chlorine oxyacids to find the one matching HClO₂.
Select the formula HClO₂ as the correct chemical formula for chlorous acid.
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