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, it turns cloudy. what is A?

Options

(a) CaCO₃
(b) CaO
(c) Ca(OH)₂
(d) Ca(HCO₃)₂

Correct Answer:

Ca(OH)₂

Explanation:

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