(a) Solution of a substance X is used for testing carbon dioxide. Write the equation of X with carbon dioxide.
(b) How is Yobtained ? Write chemical equation.
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a. X- calcium hydroxide --- Ca[OH]2
Ca[OH]2 + CO2 ------> CaCO3 + H2O
b. Calcium hydroxide is obtained by the reaction of calcium oxide with water.
CaO + H2O -------> Ca[OH]2 + Heat
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