allerypOH of a solution with pH = 8.5 (at 25°C):
A9.5
B8.5
C6.5
D5.5
Answer & Solution
Correct answer: D. 5.5
At 25°C, pH + pOH = 14. So pOH = 14 - 8.5 = 5.5. Solution is mildly basic (pH > 7).
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