The acid being generated is Nitric acid going into a Lead Nitrate solution already containing approx. 6 grams per liter Nitric acid. The neutral
solution contains Lead Nitrate + Lead Carbonate (No actual Carbonate will be going into the Acidic tank by using a filter). This system has (afaik)
no buffering capacity or at least we can assume as a good approximation that there is no buffering going on. |