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vera_ewing

  • one year ago

Carbonic acid (H2CO3) and the corresponding bicarbonate (HCO3-) has a pKa of 6.38. If the pH of the buffer was 6.05, which species would be in greater quantity? A. HCO3- B. CO32- C. H2CO3 D. HCO3- and H2CO3 would be in equal amounts.

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  1. JoannaBlackwelder
    • one year ago
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    Sorry, I'm not good with buffers.

  2. Photon336
    • one year ago
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    I think H2CO3 pH = pKA + log[A-/HA] Ph <pKA so log[A/HA] < 1 HA>A

  3. taramgrant0543664
    • one year ago
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    Yes I would think it should be C

  4. vera_ewing
    • one year ago
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    Thanks.

  5. Photon336
    • one year ago
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    C

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