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As the hydronium ion concentration in a solution rises, the pH value:
ARises
BHolds
CJumps
DFalls
Answer & Solution
Correct answer: D. Falls
1. More hydrogen ions means a stronger acid.
2. Stronger acid sits lower on the scale.
3. So the pH value falls.
_Source: syllabus Science Class X, Chapter 2, Acids, Bases and Salts._
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