The equation Cu(NO3)2 + Na2S -> CuS + 2NaNO3

  1. Detailed information about the equation Cu(NO3)2 + Na2S -> CuS + 2NaNO3

The chemical equation shows that when Copper (II) Nitrate (Cu(NO3)2) reacts with Sodium Sulfide (Na2S), it will produce Copper (II) Sulfide (CuS) and Sodium Nitrate (NaNO3).

  1. Reaction conditions

In order for the reaction to occur, both substances need to be present, meaning they must come into contact with each other. In addition, the reaction environment needs to be in an acidic state as the reaction generates H+ ions.

  1. Reaction Process

This process consists of two steps:

Step 1: Dissociation of Cu(NO3)2 and Na2S in water.
Cu(NO3)2 -> Cu2+ + 2NO3-
Na2S -> 2Na+ + S2-

Step 2: Complexation between Cu2+ ion and S2- ion.
Cu2+ + S2- -> CuS

  1. Phenomena Occurring

When the reaction occurs, you will see a change in the color of the solution, from transparent or light blue (depending on the concentration of Cu(NO3)2) to black (due to the formation of CuS).

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