what is a ph scale? state its maximum and minimum value.
A pH scale is a measure of how acidic or basic a substance is (pH stands for 'potential of Hydrogen'). The pH scale formally measures the activity of hydrogen ions in a substance or solution, which approximates the concentration of hydrogen ions under low concentrations.
The minimum value is 0 and the maximum is 14, i.e the pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.
it is a scale for measuring hydrogen ion concentration. The concentration of H+ are generally small, therefore conc. of H+ ions are expressed in terms of pH. pH is defined as negative logarithm of H+ conc. or H3O+ conc.
pH = -log[H+] or pH = -log[H3O+]
pH stands for power of hydrogen,
pH 7 is basic
-hope u undrstnd d concpt-
a scale introduced by a scientist named sorenson discovered ph sacle which shows the concentration oh H ions in a particular solution. it has its values from 1-14
1-7 are acids (1-3 strong acids, 3-5 moderate acids, 5-7 weak acids)
7 is neutral
7-14 are bases (7-10 weak base, 10-12 moderate base, 12-14 strong base)
the acids have the darker shades of red and bases have the shades of pink..