Table 1 Molecular formula, weights, structures and dissociation constants of the constitutes in Buffer-A, -B, -C and -D.
Name | Buffer-A | Buffer-B | Buffer-C | Buffer-D | ||||
|---|---|---|---|---|---|---|---|---|
Tris- hydrochloric acid buffer | Boric acid- borax buffer | Tricine- sodium hydroxide buffer | Bicine- sodium hydroxide buffer | |||||
Tris | Hydrochloric acid | Borax | Boric acid | Tricine | Sodium hydroxide | Bicine | Sodium hydroxide | |
Molecular formula | C4H11NO3 | HCl | Na2B4O7 | H3BO3 | C6H13NO5 | NaOH | C6H13NO4 | NaOH |
Molecular weight | 121.14 | 36.46 | 201.22 | 61.81 | 179.17 | 40.01 | 163.17 | 40.01 |
Molecular Structure |
| H−CI |
|
|
| NaOH |
| NaOH |
pKa | 8.10 | Â | 9.20 | Â | 8.15 | Â | 8.35 | Â |
