When CuCl2 (copper(II) chloride) reacts with H2S (hydrogen sulfide), the following products are formed:

1. Copper(II) sulfide (CuS): This is the main product of the reaction. It is a black, insoluble compound that forms as a precipitate.

2. Hydrochloric acid (HCl): This is a byproduct of the reaction. It is formed when the chloride ions from CuCl2 react with the hydrogen ions from H2S.

The overall reaction can be represented as follows:

CuCl2 + H2S → CuS + 2HCl