Table 4. pH of Aqueous Solutions as a Function of Na2CO3 Concentration at 30 °C.
| concentration of Na2CO3 (ppm) | pH of the aqueous phase |
|---|---|
| 0 | 6.70 |
| 500 | 10.68 |
| 1000 | 10.85 |
| 2000 | 10.95 |
| 3000 | 11.05 |
| 4000 | 11.10 |
| 5000 | 11.14 |
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