This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
theory_ph [11/04/2018 11:41] pieter [Nernst Equation] |
theory_ph [11/04/2018 11:42] pieter [Measurement] |
||
---|---|---|---|
Line 4: | Line 4: | ||
- | <WRAP center round box 60%> | + | <WRAP center round box 40%> |
**pH = -log [H< | **pH = -log [H< | ||
Line 42: | Line 42: | ||
====Measurement==== | ====Measurement==== | ||
+ | <WRAP center round box 60%> | ||
{{: | {{: | ||
Solution-1: sample to be measured\\ | Solution-1: sample to be measured\\ | ||
- | Solution-2 : known buffer solution (7 pH)\\ | + | Solution-2: known buffer solution (7 pH)\\ |
- | Reference-1: | + | \\Reference-1: |
Reference-2: | Reference-2: | ||
\\ | \\ | ||
+ | </ | ||
+ | |||
The heart of a pH measurement system is a membrane made from special pH-selective glass on which a very thin layer of hydrogen ions is formed when dipped in water. At high pH values, this layer will have a low hydrogen concentration. However, at low pH values a large number of H< | The heart of a pH measurement system is a membrane made from special pH-selective glass on which a very thin layer of hydrogen ions is formed when dipped in water. At high pH values, this layer will have a low hydrogen concentration. However, at low pH values a large number of H< | ||
\\ | \\ |