Why is the formula for nitric acid: HNO3?

It was a multiple choice and I looked it up to get the answer; but how could I have known this on a test? crossing the charges seemed to work; is that correct?

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  • 1 decade ago
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    You are definitely on the right track. Nitric acid, hydrochloric acid, sulfuric acid are examples of strong acids that, when in solution, completely dissociates into H^+ ions and the respective counterion. The counterion's charge will give you a clue on the formula:

    1) Nitric acid. Sounds like nitrate. The nitrate anion is NO3^-. So, crossing charges, the subscript on the H is 1 and the formula is HNO3.

    2) Hydrochloric acid. Sounds like chloride. The chloride anion is Cl^-. It has a charge of -1, and so crossing charges, HCl.

    3) Sulfuric acid. Sounds like sulfate. But sulfate is SO4^2-, so crossing charges, that's why the formula is H2SO4.

  • Anonymous
    4 years ago

    Formula For Nitric Acid

  • 4 years ago

    Nitric Acid Formula

  • Anonymous
    6 years ago

    This Site Might Help You.

    RE:

    Why is the formula for nitric acid: HNO3?

    It was a multiple choice and I looked it up to get the answer; but how could I have known this on a test? crossing the charges seemed to work; is that correct?

    Source(s): formula nitric acid hno3: https://knowledge.im/?s=formula+nitric+acid+hno3
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  • Anonymous
    1 decade ago

    Yes. Another thing all acids have hydrogen in them or they form H+ ions.

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