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vera_ewing

  • one year ago

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  1. taramgrant0543664
    • one year ago
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    Why D?

  2. taramgrant0543664
    • one year ago
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    Ka= [H+][A-] / [HA] an ideal buffer is a 50% : 50% mix of [A-] & [HA] in which case the buffer is in the middle of its buffer range & since at 1/2 way in its range, [A-] = [HA] then K = [H+]

  3. taramgrant0543664
    • one year ago
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    pH=-logKa 4.5=-log Ka -4.5=logKa 10^-4.5=Ka

  4. taramgrant0543664
    • one year ago
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    It should be acetic acid you can check pH=-log(1.85x10^-5) It should be 4.5 you can do the same to the others to see what their pH would be

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