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
- 2,995,661 all-time readers
- 5 Business Lessons From the "Corporate Scapegoat" Who Lost Five-Billion Euros
- 11 Amazing Examples of Disruptive Technology
- Five Fundamental Principles From Adam Grant's "Give and Take" Book
- What Is Social Marketing? And How Does It Work?
- Analytical Thinking: 8 Natural Talents Leading to Action
- British Entrepreneurs Top 100: From Richard Branson to J.K. Rowling, These Are the Most Influential Entrepreneurs in the UK