Alkaline refers to an aqueous solution having a pH greater than 7 or a [OH-] greater than 10-7. An alkaline solution is also known as basic.
- Science, Tech, Math ›
- Science ›
- Chemistry ›
- Basics ›
Definition of Alkaline in Chemstry
It's an aqueous solution with a pH greater than 7
By
Anne Marie Helmenstine, Ph.D.
Chemistry Expert
- Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
- B.A., Physics and Mathematics, Hastings College
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.
Learn about our
Editorial Process
Updated on January 13, 2019