What Is the PH of a Buffer Composed of 0 $\times$

question 65

Multiple Choice

What is the pH of a buffer composed of 0.35 M H₂PO₄^-(aq) and 0.65 M HPO₄^2-(aq) ? (K_a of H₂PO₄^- is 6.2 $\times$ 10^-8)

• A) 6.94
• B) 7.21
• C) 7.48
• D) 7.73
• E) 9.06

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