What scale is used to measure pH levels?

The scale used to measure pH levels ranges from 0 to 14, making it a logarithmic scale that indicates the acidity or alkalinity of a solution. A pH of 7 is considered neutral, with values below 7 indicating acidity and values above 7 indicating alkalinity. The reason this scale is so widely used is that it allows for a clear understanding of the concentration of hydrogen ions in a solution – the lower the pH, the higher the concentration of hydrogen ions, and vice versa.

Using a scale consistent with these parameters, scientists can easily assess and compare the pH levels of various substances, facilitating important applications in chemistry, biology, environmental science, and many other fields. The other proposed scales do not accurately represent the typical pH measurement framework, making the choice of 0 to 14 the standard in scientific practice.