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Question
A buffer solution is prepared by dissolving 27.22 g of KH2PO4 and 3.37 g of KOH in enough water to make 0.100 L of solution. What is the pH of the H2PO4-/HPO42- buffer if the Ka2 = 6.2 10-8?A) 6.84
B) 7.00
C) 7.21
D) 7.84
Answer
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