What Is the [AsO₄^3-] for a Solution Labeled 0

question 44

Multiple Choice

What is the [AsO₄^3-] for a solution labeled 0.10 M arsenic acid (H₃AsO₄) ? [Ka1 = 6 × 10^-3, Ka₂ = 1 × 10^-7, Ka₃ = 3 × 10^-12]

• A) 1 × 10^-7 M
• B) 1 × 10^-17 M
• C) 3 × 10^-12 M
• D) 3 × 10^-19 M
• E) 6 × 10^-10 M

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