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Course: High school chemistry > Unit 7

Lesson 4: Intro to acids and bases
Science
High school chemistry
Solutions, acids, and bases
Intro to acids and bases
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Apply: the pH scale

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Problem

The pH scale is used to measure a substance's acidity or alkalinity. pH is calculated using the concentration of hydrogen ions in moles per liter.
A solution of acetic acid (HCA2HA3OA2) has a pH of 2.5. Then, the solution is diluted with additional water.
How does the pH change after the dilution?
Choose 1 answer:
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Video 8 minutes 49 seconds
The pH scale