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Which of the following is treated with chlorine to obtain bleaching powder?

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Question

Which of the following is treated with chlorine to obtain bleaching powder?

Options

  • CaSO4

  • Ca(OH)2

  • Mg(OH)2

  • KOH

MCQ
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Solution

Ca(OH)2

Explanation:

Bleaching powder is manufactured by passing chlorine gas (Cl2) over dry slaked lime, which is chemically known as calcium hydroxide [(Ca(OH)2)]. The industrial reaction yields calcium oxychloride, commonly called bleaching powder (CaOCl2), along with water. The balanced chemical equation representing this entire production process is:

\[\ce{Ca(OH)2 + Cl2 -> CaOCl2 + H2O}\]

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Chapter 2: Acids, Bases and Salts - Exercise 3 [Page 123]

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Lakhmir Singh Chemistry [English] Class 10
Chapter 2 Acids, Bases and Salts
Exercise 3 | Q 64. | Page 123
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