The principle that the lime wall hardens
Because whitewashers lime is Ca (OH) 2, and the air containing carbon dioxide, and Ca (OH) 2 generation of hard CaCO3, for a long time, Ca (OH) 2 and carbon dioxide reaction, so the wall becomes hard. (calcium carbonate hard)Equation: Ca (OH) 2+CO2==CaCO3+H2O
The applied lime slurry, or calcium hydroxide, turns into calcium carbonate when it meets carbon dioxide and hardens
The lime plaster on the lime wall is the main component of calcium hydroxide.When the calcium hydroxide meets carbon dioxide in the air, it produces solid calcium carbonate.Reaction principle: calcium hydroxide + CO2 + water = calcium carbonate
