What is the pH of a 0.001 mol/L solution of sodium hydroxide at 25 degrees Celsius?
Answer and explanation
Correct answer: B. 11
- Step 1: [OH-] is 0.001, so pOH is 3. Step 2. pH = 14 - 3 = 11. Answer: 11. Why not the others: 3 is the pOH, and 10 and 13 do not match the concentration.
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