Solutions with pH less than 7are
Solutions with a pH less than 7 are considered acidic. The pH scale is a measure of the acidity or alkalinity (basicity) of a solution. It ranges from 0 to 14, with 7 being considered neutral. A pH value less than 7 indicates an acidic solution, while a pH greater than 7 indicates an alkaline or basic solution.
Acidic solutions have a higher concentration of hydrogen ions (H+) compared to hydroxide ions (OH-). Examples of acidic substances or solutions include lemon juice, vinegar, gastric acid in the stomach, and battery acid.
It’s important to note that the pH scale is logarithmic, which means that each unit change in pH represents a tenfold difference in acidity or alkalinity. For example, a solution with a pH of 4 is ten times more acidic than a solution with a pH of 5.
In summary, solutions with a pH less than 7 are considered acidic.