The equation 8HNO3 + 4CuS -> 4Cu(NO3)2 + 4H2O + 4NO + 2SO2

  1. Detailed Information about the Equation:

The chemical equation above describes the reaction between nitric acid (HNO3) and copper sulfide (CuS) to produce copper(II) nitrate (Cu(NO3)2), water (H2O), nitrogen monoxide (NO), and sulfur dioxide (SO2).

  1. Reaction Conditions:

For the reaction to occur, the presence of nitric acid and copper sulfide is necessary. At the same time, the temperature also needs to be controlled at an appropriate level, which will depend on each specific case.

  1. Reaction Process:

When nitric acid and copper sulfide come into contact with each other, they react to produce copper(II) nitrate, water, nitrogen monoxide and sulfur dioxide. The number of moles of each reactant and product after the reaction has been balanced in the chemical equation.

  1. Observed Phenomenon:

When the reaction occurs, there will be a boiling phenomenon, accompanied by a change in the color of the solution. Nitrogen monoxide and sulfur dioxide will be released as gases, which can be identified by their distinctive smell. Copper(II) nitrate will dissolve in water to form a blue solution.

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