Question : The chemical formula of bleaching powder is ______.
Option 1: CaOCl2
Option 2: CaO
Option 3: CaCO3
Option 4: Ca(OH)2
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Correct Answer: CaOCl 2
Solution : The correct answer is CaOCl 2 .
Bleaching powder is typically produced by the reaction of calcium Hydroxide [Ca(OH) 2 ] with chlorine gas (Cl 2 ). The chemical reaction is as follows:
Ca(OH) 2 + Cl 2 → Ca(ClO) 2 + H 2 O
In this reaction, Calcium Hydroxide reacts with Chlorine gas to form calcium Hypochlorite and water. Calcium Hypochlorite, or bleaching powder, has the chemical formula Ca (ClO) 2 .
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