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OpenStudy (vera_ewing):
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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OpenStudy (joannablackwelder):
Sorry, I'm not good with buffers.
OpenStudy (photon336):
I think H2CO3 pH = pKA + log[A-/HA] Ph <pKA so log[A/HA] < 1 HA>A
OpenStudy (taramgrant0543664):
Yes I would think it should be C
OpenStudy (vera_ewing):
Thanks.
OpenStudy (photon336):
C
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