Decide whether below chemical reaction iis an oxidation-reduction (“redox”) reaction. If the reaction is a redox reaction, write down the fo

Question

Decide whether below chemical reaction iis an oxidation-reduction (“redox”) reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent.

3O2 + 4Fe → 2Fe2O3

in progress 0
Cherry 3 years 2021-08-21T16:31:32+00:00 1 Answers 15 views 0

Answers ( )

  1. MichaelMet
    0
    2021-08-21T16:32:54+00:00
    Reply

    Answer:

    Explanation:

    Yes , it is a redox reaction .

    3O₂ + 4Fe → 2Fe₂O₃.

    Increase of oxidation number shows oxidation and decrease of oxidation number shows reduction .

    Neutral atoms have zero oxidation number .

    O₂ and Fe are neutral atoms so their oxidation number is zero.

    In Fe₂O₃ , charge on each Fe atom is + 3 . So its oxidation number is + 3 . Similarly charge on each of O in this compound is – 2 . So its oxidation number is -2 .

    Oxidation number of Fe increases from 0 to + 3 . Hence it is oxidized .

    Oxidation number of O decreases from 0 to  -2  . Hence it is reduced  .

    Fe is oxidized by O ( oxygen ) so oxygen is the oxidizing agent .

    O is reduced  by Fe ( iron  ) so iron  is the reducing agent .

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )