How to write the methodology? I have a practical of the MEASUREMENT USING PH METER, I don't know how to write the methodology.
Here is the introduction:
A pH meter is an electronic device mainly used for qualitative measurement, for the
determination of acid and the basic value of a solution. Generally, it measures the
hydrogen ion concentration/activity [H+] in a solution. It is denoted as:
pH = - log10 [H+]
In a pure water solution, the concentration of [H+] and [OH-] ions, respectively, range
from 1.0 x 10-1 M to 1.0 x 10-14 M. When [H+] is equal to [OH-] as when pure water
dissociates, the hydrogen ion concentration of pure water is equal to 1.0 x 10-7 M or
pH = 7.00, defined as a neutral solution at 25°C, to be of temperaturedependent/endothermic dissociation.
[H+] = [OH-] = 1.0 x 10-7 M
When an ionic or polar substance is dissolved in water, it may change the relative
numbers of H+ and OH-. The higher the pH number, the lower the hydrogen ion concentration, and vice versa.
Solution with an excess of [H+] = acidic
Solution with an excess of [OH-] = basic
Step by step
Solved in 5 steps
