pH

Table of Contents

Introduction References & Edit History Quick Facts & Related Topics

Images & Videos

alkaline testing

Read Next

Statue eroded by acid rain, pollution, weathering.

What Happened to Acid Rain?

Highway Night Traffic Portland, drive, driving, car, automobile.

What's the Difference Between Speed and Velocity?

Above the clouds 130 nautical miles below, astronaut Mark C. Lee floats freely without tethers as he tests the new Simplified Aid for Extravehicular Activity (EVA) Spacewalk Rescue (SAFER) system, Sept. 16, 1994. Space Shuttle Discovery, STS-64

Gravity: From Apples to the Universe

Discover

B-52G with cruise missiles, USAF, short range attack missiles SRAMs; guided missile

11 of the World’s Most Famous Warplanes

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Figure 13: A Maxim machine gun, belt-fed and water-cooled, operated by German infantrymen, World War I.

7 Deadliest Weapons in History

Thumbnail for flags that look alike quiz Russia, Slovenia, Iceland, Norway

Flags That Look Alike

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

Berries and leaves of the bittersweet nightshade (Solanum dulcamara) plant. Poisonous plant

7 of the World’s Deadliest Plants

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

pH: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Facts

Also Known As	potential of hydrogen • hydrogen ion concentration

Photos and Videos

alkaline testing

See All Videos and Images →

Topics

Eh–pH diagram isoelectric point quinhydrone electrode pH meter matter radiation radioactivity cluster isomerism elasticity entropy polarity heat symmetry electric charge

Dig Deeper: More Articles That Discuss This Topic