Question:
The pH of a solution with \([\text{H}^+] = 3.2 \times 10^{-3}\,\text{M}\) is closest to:
The pH of a solution with \([\text{H}^+] = 3.2 \times 10^{-3}\,\text{M}\) is closest to:
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For competitive exams, choose the \textbf{nearest value} when exact match is not available.
Updated On: Jan 12, 2026
- 2.5
- 3.0
- 3.5
- 4.0
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The Correct Option is C
Solution and Explanation
Step 1: Given hydrogen ion concentration:
\[
[\text{H}^+] = 3.2 \times 10^{-3}
\]
Step 2: Calculate pH:
\[
\text{pH} = -\log(3.2 \times 10^{-3})
\]
\[
= -(\log 3.2 - 3) \approx 2.49
\]
The closest option is 3.5.
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