Table 1 Change in the pH of a 0.9% NaCl solution after 10 min treatment with a 200 V electric current according to volume solution in electrode chamber (paper strip 20 mm)
pH at a given time | ||||
|---|---|---|---|---|
Volume of 0.9% NaCl (ml) in the electrode chamber | Cathode | Anode | ||
0 min | 10 min | 0 min | 10 min | |
15 | 7.3 | 12 | 7.3 | 2.2 |
25 | 7.3 | 11.3 | 7.3 | 2.7 |
50 | 7.3 | 11.4 | 7.3 | 3 |
100 | 7.3 | 10.3 | 7.3 | 4 |