pOH Definition (Chemistry)

Chemistry Terminology: Definition of pOH

pOH is a measure of hydroxide ion concentration or alkalinity.
pOH is a measure of hydroxide ion concentration or alkalinity. Stephan Zabel / Getty Images

pOH Definition: pOH is a measure of hydroxide ion (OH-) concentration.

pOH is a measure of the alkalinity of a solution.

Aqueous solutions at 25°C with pOH less than 7 are alkaline, pOH greater than 7 are acidic and pOH equal to 7 are neutral.

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Helmenstine, Anne Marie, Ph.D. "pOH Definition (Chemistry)." ThoughtCo, Jul. 24, 2017, thoughtco.com/definition-of-poh-in-chemistry-605893. Helmenstine, Anne Marie, Ph.D. (2017, July 24). pOH Definition (Chemistry). Retrieved from https://www.thoughtco.com/definition-of-poh-in-chemistry-605893 Helmenstine, Anne Marie, Ph.D. "pOH Definition (Chemistry)." ThoughtCo. https://www.thoughtco.com/definition-of-poh-in-chemistry-605893 (accessed May 22, 2018).