A student 發問於 科學及數學化學 · 1 十年前

Why neutralization is not a redox reaction?

how do we define? More examples needed. THX

2 個解答

評分
  • 1 十年前
    最愛解答

    A redox reaction is a reaction involving transfer of electrons.

    Oxidation is a process in which a substance loses electrons and there is an increase in oxidation number.

    Reduction is a process in which a substance gains electrons and there is a decrease in oxidation number.

    Both oxidation and reduction must occur to make up a redox reaction.

    For neutralization,

    ( H+ ) + ( OH - ) --- > H2O

    The oxidation number of H remains +1 throughout and the oxidation number of O remains -2 throughout. Hence it is not a redox reaction.

    For examples of redox reaction, please go to

    http://en.wikipedia.org/wiki/Redox_reaction

    Hope it helps.

    資料來源: My Chemistry Knowledge
  • pha
    Lv 7
    1 十年前

    It is wrong to think that a redox reaction must involve the transfer of elections!!

    圖片參考:http://hk.yimg.com/i/icon/16/27.gif

    The converse is true however.

    A redox reaction can be defined as this is a a chemical reaction in which at least one substance is oxidized and one is reduced.

    Oxidation: Increase in oxidation number.

    Reduction: Decrease in oxidation number.

    eg. C + O2 -----> CO2

    It does not involve the transfer of electrons!!

    The O.N. of C increase from 0 to +4 and that of O decreases from 0 to -2!!

    圖片參考:http://hk.yimg.com/i/icon/16/41.gif

    Neutralization is not a redox reaction because the oxidation numbers of all the species in the reaction do not change!!

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