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How to convert calcium carbonate into calcium hydroxide
(Chemical method in high school) The general idea is to dissolve calcium carbonate first. Here, it needs an acid, generally sulfuric acid, because calcium sulfate is slightly soluble and nitrate ion is not difficult to contain with ordinary objects. In the second step, add alkali, sodium hydroxide can be used, and then heat the solution. Because the solubility of calcium hydroxide is also low, the first thing out is sodium hydroxide.
Calcium carbonate can also be directly calcined to produce calcium oxide, which is then placed in water as calcium hydroxide solution.
In the chemical equation for the reaction of calcium hydroxide solution with carbon dioxide, why is the calcium carbonate produced precipitated? Calcium hydroxide should be solid, right?
The calcium carbonate precipitates from the reaction of calcium hydroxide solution with carbon dioxide The solubility of calcium carbonate in water is very low. When the solubility product of calcium ion and carbonate ion in solution reaches the temperature, calcium carbonate precipitates out in the form of precipitation. But when carbon dioxide is excessive, calcium carbonate reacts with carbon dioxide and water to form calcium bicarbonate,...
The calcium carbonate precipitates from the reaction of calcium hydroxide solution with carbon dioxide. The solubility of calcium carbonate in water is very low. The calcium ion and carbonate ion in the solution reach the solubility product of calcium carbonate at this temperature and precipitate in the form of precipitation. But when carbon dioxide is excessive, calcium carbonate reacts with carbon dioxide and water to form calcium bicarbonate,...
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