Respuesta :

Explanation:

MnCl2 and Na2S are mixed

Solubility:

Some reactions yield an insoluble ionic product which we call the precipitate. Such reactions are called precipitation reactions. The easiest way to determine whether a reaction will form a precipitate is through the solubility rules. These rules predict which cations or anions form insoluble salts with anion or cations.

According to this mixture:

MnCl2 (aq) + Na2S (aq) =>2 NaCl (aq) + MnS (s) (completed and balanced)

MnS (s) will precipitate

Answer: a precipitation reaction occurs