Consider the Following Information About the Diprotic Acid Ascorbic Acid

question 75

Multiple Choice

Consider the following information about the diprotic acid ascorbic acid (H₂As for short, molar mass = 176.1) . The titration curve for disodium ascorbate, Na₂As, with standard HCl is shown below:
-What is the pH at point I (V₁/2 HCl added) ?

• A) 7.95
• B) 12.39
• C) 10
• D) 11.79
• E) none of these

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