The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be_________________?
Correct answer: C. 10-11
- A. 10-3
- B. 10-10
- C. 10-11
- D. 10-4
Explanation
At 25°C, pH + pOH = 14, so pOH = 14 − 3 = 11. Therefore, the hydroxyl-ion concentration is approximately 10⁻¹¹ mol/L.
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