echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Chemicals Industry > Chemical Technology > Types of halogen oxides

    Types of halogen oxides

    • Last Update: 2021-06-18
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com

    There are many types of halogen oxides and their properties vary greatly
    .


    The electronegativity of fluorine is greater than that of oxygen.


    1.
    Preparation of Halogen Oxides

    OF 2 can be prepared by reacting elemental F 2 with 2% NaOH aqueous solution
    .

    2F 2 +2NaOH=OF 2 ↑+2NaF+H 2 O

    The mixture of O 2 and F 2 reacts under low-voltage discharge conditions to produce O 2 F 2
    .

    O 2 +F 2 =O 2 F 2

    Cl 2 O is the anhydride of hypochlorous acid, and Cl 2 O can be prepared by passing Cl 2 to the surface of newly prepared mercury oxide .

    2Cl 2 +2HgO=HgCl 2 ·HgO+Cl 2 O

    Action is to remove HgO CI -
    .

    The method of making Cl 2 O in large quantities is to react Cl 2 with wet Na 2 CO 3
    .

    2Cl 2 +2Na 2 CO 3 +H 2 O=Cl 2 O+2NaHCO 3 +2NaCl

    In the laboratory, oxalic acid is used to reduce KCIO 3 to obtain CIO 2
    .

    2ClO 5 +C 2 O 4 2- +4H + =2ClO 2 ↑+2CO 2 ↑+2H 2 O

    After HCIO 4 is carefully dehydrated with a dehydrating agent at low temperature, Cl 2 O 7 can be obtained by distillation under reduced pressure at lower temperature
    .

    2HCIO 4 =Cl 2 O 7 +H 2 O

    I 2 O 5 can be prepared by drying and dehydrating HIO 3 , which is the most stable halogen oxide .



    2H1O 3 =I 2 O 5 +H 2 O

    2.


    The properties of halogen oxides

    Halogen oxides have strong oxidizing properties, most of which are unstable, and are prone to explosion when exposed to heat, vibration, or encountering reducing agents
    .

    .
    OF 2 oxidizing elemental ratio F.
    2 weak, but still with many metals, nonmetallic substance reacts fluorides and oxyfluorides
    .


    O 2 F 2 is extremely unstable and quickly decomposes into O 2 and F 2 at 173K


    Cl 2 O is a yellow-brown gas that dissolves in water to generate hypochlorous acid


    Cl 2 O+H 2 O=2HCIO

    Cl 2 O is unstable and can react with many elements and compounds at low temperatures


    Cl 2 O+3F 2 =OCIF 3 +CIF 3

    Cl 2 O+N 2 O 5 =2CIONO 2

    ClO 2 is a yellow gas with paramagnetism; unstable, easy to explode when the concentration is high; disproportionation reaction occurs in alkali:

    2ClO2 2 +2NaOH=NaClO 3 +NaClO 2 +H 2 O

    ClO 2 is often used for bleaching pulp and water treatment


    Cl 2 O 7 is a colorless liquid.


    C 2 O 7 =CIO 3 +CIO 4

    I 2 O 5 is a white solid, and the most typical reaction is to completely oxidize carbon monoxide in the air to carbon dioxide


    1 2 O 5 +5CO=I 2 +5CO 2

    This reaction can be used to detect the CO content in the system


     

     

    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.