The equation 6HNO3 + 2ZnS -> 4NO2 + 2H2O + 2Zn(NO3)2 + 2S

  1. Detailed Information about the Equation 6HNO3 + 2ZnS -> 4NO2 + 2H2O + 2Zn(NO3)2 + 2S

The above chemical equation describes the reaction process between nitric acid (HNO3) and zinc sulfide (ZnS). In this reaction, 6 moles of nitric acid react with 2 moles of zinc sulfide to produce 4 moles of nitrogen dioxide (NO2), 2 moles of water (H2O), 2 moles of zinc nitrate (Zn(NO3)2), and 2 moles of sulfur (S).

  1. Reaction Conditions

The reaction usually occurs under normal temperature and pressure conditions.

  1. Reaction Process

The reaction process between nitric acid and zinc sulfide proceeds as follows:

  • Step 1: Nitric acid dissociates into H+ and NO3- ions.

  • Step 2: Zinc sulfide dissociates into Zn2+ and S2- ions.

  • Step 3: H+ and S2- ions combine to form sulfur and water.

  • Step 4: Zn2+ and NO3- ions combine to form zinc nitrate.

  1. Observed Phenomena

When nitric acid reacts with zinc sulfide, the red color of the nitrogen dioxide gas being released can be observed. Additionally, there is the phenomenon of yellow sulfur precipitate and zinc nitrate dissolving in water.

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