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Why does chlorine exhibit bleaching acti...

Why does chlorine exhibit bleaching action only in the presence of water?

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The bleaching action of chlorine is due to oxidation and is permanent. In the presence of water chlorine produces nascent oxygen which causes bleaching. The reaction is as
`Cl_(2)+H_(2)O to HCl +HClO`,
`HClO to HCl + O`
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ARIHANT PUBLICATION-GROUP 17 ELEMENTS : HALOGEN FAMILY-QUESTIONS FOR PRACTICE (Short Answer Type I Questions)
  1. Arrange the following in the order of property indicated for set. HF...

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  2. Why are halogens coloured ?

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  3. HF is a liquid whereas HCl is a gas. Explain.

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  4. HF is less volatile than HCl. Explain.

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  5. Explain why inspite of nearly the same electronegativity, nitrogen for...

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  6. Write the reactions of F(2) and Cl(2) with water.

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  7. What happens when potassium bromide is treated with warm conc. sulphur...

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  8. What happens when chlorine gas is passed through cold solution of NaOH...

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  9. How does the bleaching action of chlorine differ from that of sulphur ...

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  10. Why does chlorine exhibit bleaching action only in the presence of wat...

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  11. How can you prepare CI2 from HCl and HCI from Cl2 ?

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  12. What happens when NaCl is treated with sulphuric acid in presence of M...

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  13. Write the balanced equations for the following: Chlorine gas is pas...

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  14. Explain what happens when HCl gas is passed through concentrated NaCl ...

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  15. Why hydroiodic acid cannot be prepared by reacting KI with concentrate...

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  16. Why HF cannot be stored in glass bottle ?

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  17. Explain. Why fluorine forms only one oxoacid, HOF?

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  18. With what neutral molecules is Cl O^(-) isoelectronic? Is that molecul...

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  19. Give two examples and two general characteristics of interhalogen comp...

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  20. Explain why CIF3 exists where as FCI3 does not.

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