TT0 said:
TT0 said:
I am not too sure. I think standard potential is the reducing strengths of the other electrodes relative to the standard hydrogen electrode.
TT0 said:
A potential of hydrogen electrode, or pH electrode, is a scientific instrument used to measure the acidity or basicity of a solution. It consists of a glass membrane that is sensitive to hydrogen ions and a reference electrode which generates a constant electrical potential.
A pH electrode works by measuring the difference in electrical potential between the glass membrane and the reference electrode. The glass membrane is selective towards hydrogen ions and allows them to pass through, creating a potential difference. The reference electrode, typically a silver/silver chloride electrode, generates a constant potential that serves as a reference point.
The range of a pH electrode typically falls between 0 and 14, with 0 being the most acidic and 14 being the most basic. However, with specialized electrodes, this range can be extended to measure solutions with extreme pH values.
To calibrate a pH electrode, a standard solution with a known pH is used. The electrode is immersed in the solution and the reading on the pH meter is adjusted to match the known pH. This process is repeated with at least two other standard solutions to ensure accuracy.
A pH electrode is commonly used in various fields such as chemistry, biology, environmental science, and food science. It is used to measure the acidity or basicity of solutions, monitor chemical reactions, and determine the quality of food and beverages. It is also an essential tool in water treatment and research studies.