The equation Fe + 2HNO3 -> Fe(NO3)2 + 2H2O + 2NO2

  1. Detailed information about the equation Fe + 2HNO3 -> Fe(NO3)2 + 2H2O + 2NO2:
  • In this equation, iron (Fe) reacts with nitric acid (HNO3) to form iron (II) nitrate (Fe(NO3)2), water (H2O), and nitrogen dioxide (NO2).
  1. Reaction conditions:
  • The reaction occurs at room temperature.
  1. Reaction process:
  • The reaction happens when iron reacts with a concentrated, hot nitric acid solution. Iron is oxidized from a valence state of II to III while the nitrogen in the nitrate ion is reduced from a valence state of V to IV.
  1. Phenomena that occur:
  • During the reaction process, iron gradually dissolves in the nitric acid solution, producing a brown solution due to the iron (II) nitrate and the brown nitrogen dioxide gas that is released.

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