Question

What does the pH scale measure?

Answer 1

In order to the question, first we will discuss the pH scale measure, then we will discuss why measurement of pH scale is important. And finally we will discuss briefly the multiple methods of measuring pH.

Complete step by step solution:
The pH scale is a logarithmic scale used to measure acidity. The pH scale measures how basic or acidic a substance is, and it ranges from 0 to 14. On the pH scale, a pH of 7 is neutral, less than 7 is acidic and higher than 7 is basic.
The pH of any substance indicates the number of hydrogen ions forming in a specific volume of water. Water is neutral; however, when chemicals are added to water, the mixture becomes basic or acidic. An example of an acidic substance is vinegar, while a substance like ammonia is basic. The pH measurements of substances are used in chemical engineering, medicine, nutrition, biology, water purification, chemistry and many other applications.
Now, a question arises here: why is measurement of pH important? So, Synthetic compounds responses in water are influenced by the causticity or alkalinity of the arrangement. This is significant in the science lab, however in industry, cooking, and medication. pH is painstakingly controlled in human cells and blood. The typical pH range for blood is somewhere in the range of 7.35 and 7.45. Variety by even a 10th of a pH unit might be deadly. Soil pH is significant for crop germination and development. Corrosive downpour brought about by regular and man-made contaminations changes the corrosiveness of soil and water, extraordinarily influencing living beings and different cycles. In cooking, pH changes are utilized in preparing and blending. Since numerous responses in regular daily existence are influenced by pH, it's helpful to realize how to figure and gauge it.

Note:
There are multiple methods of measuring pH:-
$\bullet$ The most common method is a pH meter, which involves a pH-sensitive electrode (usually made of glass) and a reference electrode.
$\bullet$ Acid-base indicators change color in response to different pH values. Litmus paper and pH paper are used for quick, relatively imprecise measurements. These are strips of paper that have been treated with an indicator.