Consider the following information about the diprotic acid,ascorbic acid.(H 2 As for short,molar mass 176.1) H 2 As HAs - + H + pK a = 4.10 (K a = 7.9 $\times$10 - 5 ) HAs - As 2 - + H + pK a = 11.79 (K a = 1.6 $\times$ 10 - 12 ) The titration curve for disodium ascorbate,Na 2 As,with standard HCl is shown below: -What major species is (are)present at point III?

At point III, the major species present are HAs - and H 2 As, indicating a mixture of these species in equilibrium.

Consider the following information about the diprotic acid,ascorbic acid.(H 2 As for short,molar mass 176.1) H 2 As HAs - + H + pK a = 4.10 (K a = 7.9 $\times$10 - 5 ) HAs - As 2 - + H + pK a = 11.79 (K a = 1.6 $\times$ 10 - 12 ) The titration curve for disodium ascorbate,Na 2 As,with standard HCl is shown below: -What major species is (are)present at point III?

At point III, the major species present are HAs - and H 2 As, indicating a mixture of these species in equilibrium.

Solved

Consider the Following Information About the Diprotic Acid,ascorbic Acid $\times$ 10^-⁵)
HAs^- As²^- + H⁺pK_a

Question 42

Multiple Choice

Consider the following information about the diprotic acid,ascorbic acid.(H₂As for short,molar mass 176.1)
H₂As $Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What major species is (are) present at point III? A) As2- and HAs- B) HAs- only C) HAs- and H2As D) H2As only E) H2As and H+$ HAs^- + H⁺pK_a
$Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What major species is (are) present at point III? A) As2- and HAs- B) HAs- only C) HAs- and H2As D) H2As only E) H2As and H+$ = 4.10 (K_a
$Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What major species is (are) present at point III? A) As2- and HAs- B) HAs- only C) HAs- and H2As D) H2As only E) H2As and H+$ = 7.9 $\times$ 10^-⁵)
HAs^- $Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What major species is (are) present at point III? A) As2- and HAs- B) HAs- only C) HAs- and H2As D) H2As only E) H2As and H+$ As²^- + H⁺pK_a
$Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What major species is (are) present at point III? A) As2- and HAs- B) HAs- only C) HAs- and H2As D) H2As only E) H2As and H+$ = 11.79 (K_a
$Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What major species is (are) present at point III? A) As2- and HAs- B) HAs- only C) HAs- and H2As D) H2As only E) H2As and H+$ = 1.6 $\times$ 10^-¹²)
The titration curve for disodium ascorbate,Na₂As,with standard HCl is shown below: $Consider the following information about the diprotic acid,ascorbic acid.(H2As for short,molar mass 176.1) H2As HAs- + H+ pKa = 4.10 (Ka = 7.9 \times 10-5) HAs- As2- + H+ pKa = 11.79 (Ka = 1.6 \times 10-12) The titration curve for disodium ascorbate,Na2As,with standard HCl is shown below: -What major species is (are) present at point III? A) As2- and HAs- B) HAs- only C) HAs- and H2As D) H2As only E) H2As and H+$
-What major species is (are) present at point III?