In chemistry, pH is a measure of the activity of the (solvated) hydrogen ion. p[H H], which measures the hydrogen ion concentration, is closely related to, and is often written as, pH. Pure water has a pH very close to 7 at 25 °C. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. The pH scale is traceable to a set of standard solutions whose pH is established by international agreement.
WELCOME TO RICHTOPIA
- 2,611,061 all-time users
- Economists Top 100: From Joseph Stiglitz to Michael Porter, These Are the Most Influential Economists in the World
- 11 Amazing Examples of Disruptive Technology
- Top 100 Leaders from Multilateral Organisations: From Kristalina Georgieva to Jamal Bin Huwaireb, These Are the Most Influential People in This Sphere
- 17 Great Examples of Effective Leadership and Strategy
- What Is Social Marketing? And How Does It Work?
- British Entrepreneurs Top 100: From Richard Branson to J.K. Rowling, These Are the Most Influential Entrepreneurs in the UK