NANP Board Practice Exam

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Which statement is true regarding pH?

  1. Higher hydrogen presence indicates more alkalinity

  2. Less hydrogen presence indicates more alkalinity

  3. More hydrogen presence indicates more alkalinity

  4. More hydrogen presence does not affect alkalinity

The correct answer is: Higher hydrogen presence indicates more alkalinity

The correct statement regarding pH is that less hydrogen presence indicates more alkalinity. In the context of pH, the scale ranges from 0 to 14, with lower values indicating acidity, neutral at 7, and higher values indicating alkalinity. Alkalinity is associated with a lower concentration of hydrogen ions (H+). Therefore, as the amount of hydrogen ions decreases, the pH increases, demonstrating more alkaline properties. When we consider pH values, those above 7 represent an alkaline solution, which corresponds to a lesser presence of hydrogen ions. Understanding the relationship between hydrogen ions and pH is crucial in various biological and chemical processes, as it influences enzyme activity, metabolic functions, and overall homeostasis in living organisms.

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