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How come slaked lime water loses its alkalinity over time in barrel initial slaked lime water is PH11.4 after a few days become PH neutral. why what is it involved how long does it takes before it los?
Wiki User
∙ 7y ago
Slaked lime is essentially calcium hydroxide, Ca(OH)2. The main reason it loses its alkalinity over time is because it tends to absorb CO2 (carbon dioxide) from the atmosphere, and this results in the formation of calcium carbonate. The reaction is Ca(OH)2 + CO2 ==> CaCO3 + H2O. The pH will not go back to 7 because the calcium carbonate (CaCO3) that is formed is also alkaline.
Wiki User
∙ 7y ago
Wiki User
∙ 7y agoi need to know when it neutralized by itself to PH 7 so that i can pour it back into soil without destroying my garden soil
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