Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When carbondioxide is bubbled through A, it turns cloudy. What is the chemical formula of A?

Chemical A is used for water softening to remove temporary hardness. A

1.	Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When carbondioxide is bubbled through A, it turns cloudy. What is the chemical formula of A?
Answer» `CaCO_(3)` CaO `Ca(OH)_(2)` `Ca(HCO_(3))_(2)` Solution :Slaked lime Is usedto remove tamporary hardness of water. It CONVERTS SOLUBLE BICARBONATES of Mg and Ca into INSOLUBLE carbonates of Mg and Ca.