Chlorine water loses its yellow color on exposure to light. How can you explain it?
Chlorine water is a solution of chlorine gas in water. Chlorine gas is a toxic, yellowish-green gas that is used to disinfect water. When chlorine gas is dissolved in water, it forms hypochlorous acid (HOCl) and hydrochloric acid (HCl). HOCl is a strong oxidizing agent that kills bacteria and other microorganisms.
The yellow color of chlorine water is due to the presence of HOCl. When chlorine water is exposed to light, the HOCl is converted to hypochlorite ions (OCl-) and hydrogen ions (H+). OCl- ions are not as strong oxidizing agents as HOCl, so the water loses its yellow color.
The reaction that occurs when chlorine water is exposed to light is as follows:
2HOCl + hv → 2OCl- + 2H+
where hv represents a photon of light.
Related Questions:
- Why is chlorine water used to disinfect water?
- Chlorine water is used to disinfect water because it is a strong oxidizing agent that kills bacteria and other microorganisms.
- What is the yellow color of chlorine water due to?
- The yellow color of chlorine water is due to the presence of hypochlorous acid (HOCl).
- What happens when chlorine water is exposed to light?
- When chlorine water is exposed to light, the HOCl is converted to hypochlorite ions (OCl-) and hydrogen ions (H+).
- Why does chlorine water lose its yellow color when exposed to light?
- Chlorine water loses its yellow color when exposed to light because the HOCl is converted to OCl- ions, which are not as strong oxidizing agents as HOCl.
- What is the reaction that occurs when chlorine water is exposed to light?
- The reaction that occurs when chlorine water is exposed to light is: 2HOCl + hv → 2OCl- + 2H+.
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