Question

1-Barium sulfate and strontium sulfide both are placed into beaker of water.

a- Will the strontium sulfide dissociate?
.......

- If it does,write the equation showing the dissociation.

Answer 1

Numerous sites on the web claim SrS is insoluble in water but I think that is incorrect. I think it is soluble. CaS is soluble, BaS is soluble, SrS should be soluble.
SrS --> Sr^2+ + S^2-