Hydrogen ion concentration in distilled water is___________________?
Correct answer: D. 10-7
- A. 7 x 10^7
- B. 7 x 10^-7
- C. 107
- D. 10-7
Explanation
At 25°C, distilled water is neutral, so its hydrogen-ion concentration is 1.0 × 10^-7 mol/L. The value 7 is its pH, not its hydrogen-ion concentration.
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