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    hslove142331's Avatar
    hslove142331 Posts: 71, Reputation: 1
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    #1

    Mar 31, 2010, 08:44 PM
    H2CO3 and NaHCO3 adding H+, write ionic equation
    Write ionic equations that illustrate how each pair of compounds can serve as a buffer pair. Use the smallest possible integer coefficients.

    H2CO3 and NaHCO3 adding H+,
    AND
    H2CO3 and NaHCO3 adding OH-,

    Please help me how to do this problems for me.
    Please help!
    Thanks
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Mar 31, 2010, 10:39 PM

    Write down how each of the two substances dissociate.





    Adding H^+ will react with the large 'reservoir' of CO3 2- from the sodium carbonate and form carbonic acid. Since the amount of carbonate from the acid is practically unchanged, the pH will remain practically the same.

    Try with the other one now.
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