Potassium bromide and calcium sulfide equation?

Im not that sure but the equation is:The problem is that the CaS reacts with water to give Ca(OH)2 (the precipitate) and H2S (a gas), so the overall molecular equation is:

KBr (aq) + CaS (aq) + 2 H2O ---> KBr (aq) + Ca(OH)2 (s) + H2S (g)

The potassium bromide does not enter into the reaction at all.

You might list this as:

CaS (aq) + 2 H2O ---> Ca(OH)2 (s) + H2S (g)

Hpe this helps :)