What is the pH of a mol/L solution of hydrochloric acid at 25 °C?
Answer and explanation
Correct answer: B. 2
- Step 1: HCl is a strong acid, so mol/L.
- Step 2: .
Answer
2.
Why not the others: 12: the concentration was treated as that of OH⁻. 3: a slip in the logarithm. -2: the minus sign in the definition of pH was left out.
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