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Give the reason for bleaching action of ...

Give the reason for bleaching action of `Cl_(2)`.

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Bleaching action of `Cl_(2)` is due to its oxidising property. In aqueous solution, `Cl_(2)` liberates nascent oxygen which brings about the oxidation of coloured substances present in vegetables and organic matter to colourless substances.
`Cl_(2)+H_(2)O to 2HCl +[O]`
Coloured substance `+ [O] to` Colourless substance
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ARIHANT PUBLICATION-GROUP 17 ELEMENTS : HALOGEN FAMILY-QUESTIONS FOR PRACTICE (Very Short Answer Type Questions)
  1. Arrange the following in order of increasing size: Cl, Cl^+ , Cl^-

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  2. F(2) has lower bond dissociation enthalpy than Cl(2). Why?

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  3. Explain why halogens are strong oxidising agents.

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  4. SnCl(4) is more covalent than SnCl(2).

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  5. What is the oxidation number of oxygen in OF(2)?

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  6. Give two examples to show the anomalous behaviour of fluorine.

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  7. Why hydrofluoric acid is the weakest of all the halogen acids ?

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  8. Which acid is used to draw picture on glass?

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  9. What happens when fluorine is passed through conc. NaOH solution?

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

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  11. Give the reason for bleaching action of Cl(2).

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  12. Name two poisonous gases which can be prepared from chlorine gas.

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  13. What is the role of MnO2 in the preparation of Cl2 from HCI?

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  14. Account for the following. Iron on reaction with HCl forms FeCl(2) and...

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  15. Why is ICl more reactive than I(2)?

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  16. Give reason for the following: F(2) is more reactive than ClF(3) b...

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  17. Why ClF(3) exists, whereas FCl(3) does not exist explain?

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  18. Draw the structure of BrF(3).

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  19. Draw the structure of ClF(3).

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  20. ClF(3) molecule has a T-shaped structure and not a trigonal planar one...

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