* pH and Acidity: pH is a measure of acidity or alkalinity. A lower pH indicates a higher concentration of hydrogen ions (H+), making the solution more acidic. A higher pH indicates a lower concentration of H+ ions, making the solution less acidic (more alkaline).
* Dilution: Diluting an acid means adding more water to the solution. This effectively reduces the concentration of H+ ions in the solution.
Example:
Imagine you have a concentrated HCl solution with a pH of 1. This means there's a high concentration of H+ ions. If you dilute this solution by adding water, the H+ ions become more spread out. The concentration of H+ ions decreases, resulting in a higher pH (say, pH 2 or 3).
Important Note: While diluting HCl increases the pH, it still remains acidic. Diluting a strong acid like HCl doesn't make it neutral; it just makes it less acidic.
