Consider the following information about the diprotic acid,ascorbic acid.(H₂As for short,molar mass 176.1)
H₂As $Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What is the pH at point III? A)4.10 B)7.95 C)11.79 D)12.39 E)none of these$ HAs^- + H⁺pK_a
$Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What is the pH at point III? A)4.10 B)7.95 C)11.79 D)12.39 E)none of these$ = 4.10 (K_a
$Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What is the pH at point III? A)4.10 B)7.95 C)11.79 D)12.39 E)none of these$ = 7.9

\times

10^-⁵)
HAs^- $Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What is the pH at point III? A)4.10 B)7.95 C)11.79 D)12.39 E)none of these$ As²^- + H⁺pK_a
$Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What is the pH at point III? A)4.10 B)7.95 C)11.79 D)12.39 E)none of these$ = 11.79 (K_a
$Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What is the pH at point III? A)4.10 B)7.95 C)11.79 D)12.39 E)none of these$ = 1.6

\times

10^-¹²)
The titration curve for disodium ascorbate,Na₂As,with standard HCl is shown below: $Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What is the pH at point III? A)4.10 B)7.95 C)11.79 D)12.39 E)none of these$
-What is the pH at point III?
A)4.10
B)7.95
C)11.79
D)12.39
E)none of these

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