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Consider the Following Information About the Diprotic Acid Ascorbic Acid

Question 21

Multiple Choice

Consider the following information about the diprotic acid ascorbic acid (H2As for short, molar mass = 176.1) . Consider the following information about the diprotic acid ascorbic acid (H<sub>2</sub>As for short, molar mass = 176.1) . The titration curve for disodium ascorbate, Na<sub>2</sub>As, with standard HCl is shown below: -What major species is(are) present at point III? A) HAs<sup>-</sup> only B) H<sub>2</sub>As and H<sup>+</sup> C) H<sub>2</sub>As only D) As<sup>2-</sup> and HAs<sup>-</sup> E) HAs<sup>-</sup> and H<sub>2</sub>As The titration curve for disodium ascorbate, Na2As, with standard HCl is shown below: Consider the following information about the diprotic acid ascorbic acid (H<sub>2</sub>As for short, molar mass = 176.1) . The titration curve for disodium ascorbate, Na<sub>2</sub>As, with standard HCl is shown below: -What major species is(are) present at point III? A) HAs<sup>-</sup> only B) H<sub>2</sub>As and H<sup>+</sup> C) H<sub>2</sub>As only D) As<sup>2-</sup> and HAs<sup>-</sup> E) HAs<sup>-</sup> and H<sub>2</sub>As
-What major species is(are) present at point III?


A) HAs- only
B) H2As and H+
C) H2As only
D) As2- and HAs-
E) HAs- and H2As

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