What is the pH of an aqueous solution that contains 0.226 M potassium hydrogen phosphate, K2HPO4, and 0.451 M potassium dihydrogen phosphate, KH2PO4?
(Ka for H2PO4- = 6.2 x 10-8)
a. 6.562
b. 6.862
c. 6.908
d. 7.208
e. 7.508
Answer: C
Chemistry
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