Multiple Choice
In nature, carbonic acid is primarily formed when which process occurs?
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17. Acid and Base Equilibrium
Oxyacids
Multiple Choice
In the context of oxyacids, what is the molecular formula for phosphorous acid (the acid of the phosphite ion)?
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Verified step by step guidance1
Understand that oxyacids are acids that contain hydrogen, oxygen, and another element (in this case, phosphorus). The acid is related to the corresponding polyatomic ion by adding hydrogen ions (H⁺) to the ion.
Identify the polyatomic ion involved: the phosphite ion, which has the formula \(\mathrm{PO_3^{3-}}\).
To form the oxyacid from the phosphite ion, add hydrogen atoms to balance the charge and form the acid. Since the phosphite ion has a charge of -3, adding three hydrogen ions (H⁺) will neutralize the charge, resulting in the acid formula.
Write the molecular formula of the acid by combining the phosphite ion with the added hydrogens: \(\mathrm{H_3PO_3}\).
Confirm that this formula corresponds to phosphorous acid, which is the acid derived from the phosphite ion.
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