The equation 4HNO3 + MnS -> 2NO2 + 2H2O + Mn(NO3)2 + 2S.

  1. Detailed information about the equation 4HNO3 + MnS -> 2NO2 + 2H2O + Mn(NO3)2 + 2S:
    This chemical equation describes the reaction process between strong nitric acid (HNO3) and manganese sulfide (MnS). The result of the reaction is the production of nitrogen dioxide (NO2), water (H2O), manganese nitrate (Mn(NO3)2), and sulfur (S).

  2. Reaction conditions:
    This reaction takes place under standard temperature, pressure conditions and requires the presence of a catalyst.

  3. Reaction Process:

    • Step 1: HNO3 reacts with MnS to form Mn(NO3)2 and NO2.
    • Step 2: NO2 continues to react with HNO3 to form NO3- and H2O.
    • Step 3: Finally, Mn(NO3)2 reacts with sulfur to produce the final products, Mn(NO3)2, and S.

  4. Occurrences:
    When the reaction occurs, you will see a color change due to the formation of NO2, a reddish-brown gas. In addition, you may also see the precipitation of sulfur in the form of yellow particles.

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