The equation Fe + 2HNO3 + 3H2O2 -> Fe(NO3)3 + 4H2O.

  1. The chemical equation above represents the oxidation process of iron (Fe) in the environment of nitric acid (HNO3) and hydrogen peroxide (H2O2) to form iron (III) nitrate (Fe(NO3)3) and water (H2O).

  2. Reaction conditions: This is an oxidation-reduction reaction, so the presence of an oxidizing agent (here HNO3 and H2O2) and a reducing agent (here Fe) is required. At the same time, the reaction should take place at room temperature.

  3. Reaction process:

    • Step 1: Iron reacts with nitric acid to form iron (II) nitrate and hydrogen.
    • Step 2: Iron (II) nitrate reacts with hydrogen peroxide to form iron (III) nitrate and water.

  4. Observation: During the reaction process, we can observe iron in solid form gradually transforming into a yellow-brown solution of iron (III) nitrate. Simultaneously, there will be a gas emission due to the dissolution of iron.

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