Calculate the Ratio of the Molarities of HPO₄^2- and H₂PO₄^-

question 2

Multiple Choice

Calculate the ratio of the molarities of HPO₄^2- and H₂PO₄^- ions required to achieve buffering at pH = 7.00.For H₃PO₄,pK_a1 = 2.12,pK_a2 = 7.21,and pK_a3 = 12.68.

• A)0.81
• B)1.23
• C)0.62
• D)0.21
• E)1.62

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