Answer to Question #55376 in General Chemistry for zack

Question

1-Aqueous solutions of a compound did not form precipitates with Cl-, Br-, I-, SO42-, CO32-, PO43-,
OH-, or S2-. This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified. This compound is ...?

2-Write the molecular, complete ionic and net ionic equations for the dissolution of zinc metal in A- aqueous hydrobromic acid .Molecular equation..Complete ion equation..Net ion equation.

Answer 1

Answer 1: Na₂S
Answer 2:
Zn(s)+2HBr(aq)→ZnBr₂ (aq)+ H₂ (g)
Zn⁰+2H⁺+2Br^-→Zn²⁺+2Br^-+H₂⁰
Zn⁰+2H⁺→Zn²⁺+H₂⁰