Multiple Choice
What is the pH of a buffer composed of 0.35 M H2PO4-(aq) and 0.65 M HPO42-(aq) ? (Ka of H2PO4- is 6.2 10-8)
A) 6.94
B) 7.21
C) 7.48
D) 7.73
E) 9.06
Correct Answer:
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