Carbonation in Lambic: Difference between revisions
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K<sub>total</sub> = 4.47*10<sup>-7</sup> = [H<sup>+</sup>][HCO<sub>3</sub><sup>-</sup>]/([H<sub>2</sub>CO<sub>3</sub>] + [CO<sub>2</sub> (aq)]) [REF]. | K<sub>total</sub> = 4.47*10<sup>-7</sup> = [H<sup>+</sup>][HCO<sub>3</sub><sup>-</sup>]/([H<sub>2</sub>CO<sub>3</sub>] + [CO<sub>2</sub> (aq)]) [REF]. | ||
which uses numbers a brewer is likely to know, pH and | |||
Note that the denominator is the total concentration of CO<sub>2</sub> and products to an approximation better than one part in two million. Combining this with the total carbon from above and re-arranging, we can write | Note that the denominator is the total concentration of CO<sub>2</sub> and products to an approximation better than one part in two million. Combining this with the total carbon from above and re-arranging, we can write | ||
[H<sup>+</sup>] = 10<sup>-pH</sup> | [H<sup>+</sup>] = 10<sup>-pH</sup> | ||
[CO<sub>2</sub> (aq)] = 4.3 * V<sub>CO<sub>2</sub></sub> | [CO<sub>2</sub> (aq)] = 4.3 * V<sub>CO<sub>2</sub></sub> | ||
[H<sub>2</sub>CO<sub>3</sub>] = Ka<sub>0</sub> * 4.3 * V<sub>CO<sub>2</sub></sub> | [H<sub>2</sub>CO<sub>3</sub>] = Ka<sub>0</sub> * 4.3 * V<sub>CO<sub>2</sub></sub> | ||