What Is the [HPO₄^-2] of a Solution Labeled "0

question 58

Multiple Choice

What is the [HPO₄^-2] of a solution labeled "0.10 M Phosphoric Acid"? [Ka1 = 7.1 × 10^-3; Ka₂ = 6.3 × 10^-8; Ka₃ = 4.2 × 10^-13]

• A) 4.2 × 10^-13 M
• B) 6.3 × 10^-8 M
• C) 7.1 × 10^-3 M
• D) 1.6 × 10^-9 M
• E) 1.6 × 10^-16 M

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