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Question
Estimate the pH of the resulting solution prepared by mixing 1.0 mole of solid disodium phosphate (Na2HPO4) and 1.25 mole of hydrochloric acid. The pKavalues for phosphoric acid are 2.1, 7.2, 12.4.a. pH < 2.1
b. pH = 2.1
c. 2.1 < pH < 7.2
d. pH = 7.2
e. 7.2 < pH < 12.4
Answer
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