Vitamic C, aka ascorbic acid (H₂C₆H₆O₆) is a weak diprotic acid. Which of the following aqueous mixtures would form the most effective buffer at a pH of 12.00? pKa₁ = 4.10, pKa₂ = 11.79

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Vitamic C, aka ascorbic acid (H₂C₆H₆O₆) is a weak diprotic acid. Which of the following aqueous mixtures would form the most effective buffer at a pH of 12.00? pKa₁ = 4.10, pKa₂ = 11.79

A) Equal moles of H,CH,O, &
HC,H,O,
9.
6.
6"
B) Equal moles of HC,H,O, &
C,H,O,*
9.
6
2-
6
C) Equal moles of H,C,H,O, &
2
6
6.
2-
6
D) All of these.
E) None of these.
Transcribed Image Text:A) Equal moles of H,CH,O, & HC,H,O, 9. 6. 6" B) Equal moles of HC,H,O, & C,H,O,* 9. 6 2- 6 C) Equal moles of H,C,H,O, & 2 6 6. 2- 6 D) All of these. E) None of these.
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