A solution of a strong base has [OH-] = 1 x 10^-4 mol/L at 25 C. What is its pH?
Answer and explanation
Correct answer: A. 10
- Step 1: pOH = -log[OH-] = 4.
- Step 2: pH = 14 - pOH = 10.
Answer
10.
Why not the others: 4 is the pOH, not the pH; the other values do not follow from pH + pOH = 14.
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