Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When CO₂ is bubbled through a solution of A, it turns cloudy. What is the chemical formula of A.
(a) CaCO₃
(b) CaO
(c) Ca(OH)₂
(d) Ca(HCO₃)₂
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(c). Ca(OH)2 is your answer.
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Explanation:
Ca(OH)2 IS THE ANSWER
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