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The scale that measures hydrogen ion concentration in a solution is called the:
ApH scale
BpK scale
CpM scale
DpV scale
Answer & Solution
Correct answer: A. pH scale
1. Chemists needed a number for acidity.
2. A scale was developed for hydrogen ion concentration.
3. That scale is the pH scale.
_Source: syllabus Science Class X, Chapter 2, Acids, Bases and Salts._
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