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)

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)

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