pH measures the acidity or basicity of a solution from "summary" of NCERT Chemistry Class 11 - [CBSE Board] by Dr. S. C. Rastogi, ,Er. Meera Goyal
The concept of pH is a fundamental aspect of understanding the acidity or basicity of a solution. It is a measure of the concentration of hydrogen ions in a solution, which determines its acidic or basic properties. In simpler terms, pH indicates how acidic or basic a solution is on a scale ranging from 0 to 14. A solution with a pH less than 7 is considered acidic, while a solution with a pH greater than 7 is considered basic. A pH of exactly 7 indicates a neutral solution, where the concentration of hydrogen ions is equal to the concentration of hydroxide ions. This balance between acidic and basic ions is crucial in determining the overall properties of a solution. The pH scale is logarithmic, meaning that each unit change in pH represents a tenfold change in the concentration of hydrogen ions. For example, a solution with a pH of 3 is ten times more acidic than a solution with a pH of 4. This logarithmic relationship allows for precise measurements of acidity or basicity in a wide range of solutions. Measuring pH is essential in various fields such as chemistry, biology, and environmental science. It helps in determining the suitability of a solution for a specific purpose, such as in industrial processes or biological systems. By understanding the pH of a solution, researchers and scientists can make informed decisions about how to manipulate or utilize that solution effectively.- The concept of pH provides a simple yet powerful tool for understanding the acidity or basicity of a solution. By measuring the concentration of hydrogen ions, pH allows us to categorize solutions as acidic, basic, or neutral, providing valuable insights into their properties and potential uses.
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