pH (Q1166)
Subject, term, tag: pH
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | pH |
Subject, term, tag: pH |
Statements
IPCC Glossary v1.5
1 reference
27 May 2026
A dimensionless measure of the acidity of a dilute solution (e.g., seawater) based on the activity, or effective concentration, of hydrogen ions (H +) in the solution. pH is measured on a logarithmic scale where pH = –log 10 (H +). Thus, a pH decrease of 1 unit corresponds to a 10-fold increase in the acidity, or the activity of H+. (English)
IPCC Glossary v1.5
1 reference
27 May 2026