NANP Board Practice Exam 2025 - Free NANP Board Practice Questions and Study Guide

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Question: 1 / 400

Which of the following measurements would be considered alkaline?

6.5

7.0

7.3

8.0

A measurement is considered alkaline when it is above 7.0 on the pH scale. The pH scale ranges from 0 to 14, where values below 7 indicate acidity, a value of 7 is neutral, and values above 7 indicate alkalinity. Therefore, a pH of 8.0 is clearly within the alkaline range, indicating that the substance has a higher concentration of hydroxide ions (OH-) than hydrogen ions (H+).

In the context of the other options, a pH of 6.5 is acidic, a pH of 7.0 is neutral, and a pH of 7.3 is slightly alkaline. However, it is the pH of 8.0 that distinctly categorizes the measurement as alkaline, reflecting a stronger basic nature, which is relevant in various fields, such as chemistry, biology, and environmental science.

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