Which type of reaction is this? (Include subcategory if applicable)
Ca(OH)2 + CO2 ----> CaCO3 + H2O
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Solution
It is a double displacement reaction (2 hydroxide ions are replaced by carbonate ion)
Moreover, this the limewater test for Carbon Dioxide. That means bubbling carbon dioxide in the limewater, makes the limewater solution milky because of the formation of calcium carbonate precipitate