Home
Class 12
CHEMISTRY
What happens when Cl(2) reacts with cold...

What happens when `Cl_(2)` reacts with cold dilute solution of sodium hydroxide?
(b) Why does chlorine water lose its yellow colour on standing?

Text Solution

Verified by Experts

(a) With cold dilute solution of sodium hydroxide , `Cl_(2)` undergoes disproportionation to give a mixture of sodium chloride, `NaCl` and sodium hypochlorite `(NaOCl)`.
`Cl_(2)+2NaOH rarr NaOCl+H_(2)O`
(b) Cholorine water is yellow due to the presence of hypochlorous acid, `HOCl` on standing, `HOCl` being unstable decomposes to form `HCl`. Hence the yellow colour disappears.
`Cl_(2)+H_(2)IO rarr HCl+underset("yellow")(HOCl) rarr underset("colourless")(2HCl)+[O]`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • P-BLOCK GROUP 17 ELEMENTS - THE HALOGEN FAMILY

    CENGAGE CHEMISTRY|Exercise Exs 4.1 (Subjective)|16 Videos

  • P-BLOCK GROUP 17 ELEMENTS - THE HALOGEN FAMILY

    CENGAGE CHEMISTRY|Exercise Exs 4.1 (Objective)|7 Videos

  • P-BLOCK GROUP 17 ELEMENTS - THE HALOGEN FAMILY

    CENGAGE CHEMISTRY|Exercise True/False (Subjective)|14 Videos

  • P-BLOCK GROUP 16 ELEMENTS - THE OXYGEN FAMILY

    CENGAGE CHEMISTRY|Exercise Archives Subjective|10 Videos

  • P-BLOCK GROUP 18 ELEMENTS - THE INERT GASES

    CENGAGE CHEMISTRY|Exercise Ex 5.1 (Objective)|14 Videos

Similar Questions

Explore conceptually related problems

What happens when chlorine gas reacts with cold and dilute solution of NaOH?

State what happens when halogens react with a cold dilute solution of NaOH?

Knowledge Check

  • Chlorine water loses its yellow colour on standing because :

    A
    HCl gas is produced, due to the action of sunlight.
    B
    a mixture of HOCl and HCl is produced in the presence of light.
    C
    HOCl and hydrogen gas is produced
    D
    a mixture of HCl and `ClO_(3)` is produced, due to the action of sunlight

  • When chlorine reacts with cold and dilute solution of sodium hydroxide, the products obtained are

    A
    `Cl^(-)+ClO^(-)`
    B
    `Cl^(-)+ClO_(2)^(-)`
    C
    `Cl^(-)+ClO_(3)^(-)`
    D
    `Cl^(-)+ClO_(4)^(-)`

  • What happens when carbon dioxide gas reacts with solution hydroxide?

    A
    CO is formed
    B
    `CO_(2)` is formed
    C
    `Na_(2)CO_(3)` is formed
    D
    carbon dioxide does not react with sodium hydroxide

    • Similar Questions

    Explore conceptually related problems

    What happens when sodium reacts rapidly with cold water?

    When CI_(2) gas reacts wioth hot and concentrated solution of sodium hydroxide the oxidation number of chloirine changes from:

    What happen when it reacts with sodium hydroxide? Give a balanced chemical equation.

    Give reasons for the following: Chlorine water on standing loses its yellow colour.

    Chlorine water on standing loses Its colour and forms:

    Home
    Profile