What Is the PH of a Buffer That Consists of 0.20

question 88

Multiple Choice

What is the pH of a buffer that consists of 0.20 M NaH₂PO₄ and 0.40 M Na₂HPO₄?
K_a = 6.2 $\times$ 10^-8

• A)6.51
• B)6.91
• C)7.51
• D)7.90
• E)8.13