Name the substance which on treatment with chlorine yields bleaching powder

General
1

name the substance which on treatment with chlorine yields bleaching powder

2

Name the substance which on treatment with chlorine yields bleaching powder

Answer:

The substance that, when treated with chlorine, yields bleaching powder is calcium hydroxide (Ca(OH)₂), commonly known as slaked lime.

Detailed Explanation

1. Chemical Reaction

When calcium hydroxide is treated with chlorine gas, the reaction produces bleaching powder, also known as calcium oxychloride. The chemical equation for this reaction is:

Ca(OH)_2 + Cl_2 \rightarrow Ca(OCl)_2 + CaCl_2 + 2H_2O

2. Products Formed

In this reaction:

  • Calcium oxychloride (Ca(OCl)₂): This is the active component of bleaching powder.
  • Calcium chloride (CaCl₂): This is another product formed along with water.

Properties of Bleaching Powder

  1. Chemical Nature:

    • Bleaching powder is a pale yellowish powder with a strong chlorine odor due to the presence of calcium oxychloride.

  2. Uses:

    • Disinfectant: Widely used in water treatment to disinfect water.
    • Bleaching Agent: Used in the textile and paper industries for bleaching fabrics and paper.
    • Sanitization: Often used to clean and sanitize surfaces, particularly in public health setups.

Conclusion

To summarize, when calcium hydroxide (slaked lime) is treated with chlorine, it yields bleaching powder. The reaction highlights the formation of calcium oxychloride as the primary bleaching agent, playing a crucial role in various industrial and sanitation processes.

Final Answer:
The substance which, on treatment with chlorine, yields bleaching powder is calcium hydroxide (Ca(OH)₂).