Asked by nikki

if 400 mL of 0.1 M NaH2PO4 is mixed with 100 mL of 0.1 M H3PO4 what is the pH of the buffer mixture? The PKa of H3PO4 is 2.1.
Answered by DrBob222
Use the Henderson-Hasselbalch equation.
pH = 2.1 + log(40/10) = ??
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