Question

Which ionic compound is water soluble? CuS NH4 NO3 SrSO4 ZnF

Answer 1

Just use a solubility chart! Find the cation on the far left and the anion on the top and find where they connect. If it says "s," it is not soluble. If it says "aq," it is soluble. Here, ZnF (Zinc Fluoride) is soluble. Hope that helps! :)

P.S. Not all of the compounds above are on this particular chart. In future problems, just google "solubility chart" until you find one with all of the compounds you need to look at.

Answer 2

NH₄NO₃ and ZnF is water soluble.

Step-by-step explanation:

All nitrate salts are soluble. NH₄NO₃, ammonium nitrate is soluble in water.

All sulfate salts are soluble excepts those of Ba, Sr , Ca and Pb. SrSO₄ is insoluble in water.

All fluoride salts are soluble. ZnF, zinc fluoride is soluble in water.

All fluoride salts are insoluble. CuS, copper sulfide is insoluble in water.