Oxalic Acid,H₂C₂O₄ Has Acid Dissociation Constants K_a1 = 5

question 69

Multiple Choice

Oxalic acid,H₂C₂O₄ has acid dissociation constants K_a1 = 5.9 × 10^-2 and K_a2 = 6.4 × 10^-5.What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H₂C₂O₄?

• A)1.23
• B)2.10
• C)2.80
• D)4.19

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