Solutions | HCl (18%) | KOH (100 g/L) | NH4Cl (100 g/L) | HCl (3%) | KOH (30 g/L) |
pH before | 0.39 | 12.82 | 3.03 | 0.84 | 11.68 |
pH after | 0.42 | 13.00 | 3.10 | 0.46 | 10.30 |