25 °C 時, M 的 HCl 水溶液 pH 值為何?

Answer and explanation

Correct answer: C. 2

  1. Step 1: HCl 為強酸,完全解離: M。
  2. Step 2: pH 。
Answer
2.
Why not the others: 12:把氫離子濃度當成氫氧根離子濃度;3:對數的計算多算了 1;-2:忘了 pH 的負號。

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