Solution stoichiometry question?

When H2SO4 and NaOH is reacted, is it the H+ and OH- that has equal number of moles, or the H2SO4 and NaOH has equal number of moles? Thanks.

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  • 5 years ago

    H+ and OH- react in equal numbers of moles.

    1 mole of H2SO4 reacts with 2 moles of NaOH.

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  • 5 years ago

    It will be the H^+ and the OH^- that have the equal number of moles.

    complete molecular eq:

    H2SO4 + 2NaOH ---> Na2SO4 + 2H2O

    This is where the 1:2 molar ratio of H2SO4 and NaOH comes from.

    net ionic equation:

    2H^+ + 2OH^- ---> 2H2O

    2H^+ from one H2SO4 and 2OH^- from 2NaOH. The 1:2 ratio up above gets obscured here. That's because the ratio above is based on the full molecular formula, not just the number of ions involved.

    reduced to:

    H^+ + OH^- ---> H2O

    and there is your 1;1 ratio of just the ions.

    Good question.

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  • Al
    Lv 7
    5 years ago

    H2SO4 + 2NaOH --------------. Na2SO4 + 2H2O

    You figure it out.

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