What is the Scientific method of the pH scale?

Answer 1

The pH scale is a measure of the acidity of an aqueous solution. The acidity is the concentration of hydrogen ion H+, [H+].

pH is defined as -log10[H+] and this can be rearranged to pH= log10(1/[H+])

pH is a logarithmic measure. Look at the following for solutions of HCl a strong acid.

0.1M, pH 1

0.01 M pH 2

0.001M pH 3

pH7 is neutral. This is because in pure water there is an equilibrium

H2O<-> H+ + OH-

Under standard conditions the concentration of H+ in pure water is 10-7 M or (1/107)M. Taking logarithms and applying the definition pH 7 is the result.

Answer 2

The scientific method involves making observations, forming a hypothesis, conducting experiments, analyzing data, and drawing conclusions. The pH scale measures the acidity or basicity of a solution, ranging from 0 (most acidic) to 14 (most basic), with 7 being neutral. pH is determined by the concentration of hydrogen ions in a solution.