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Answer to Question #55376 in General Chemistry for zack

Question #55376
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.
Expert's answer
Answer 1: Na2S
Answer 2:
Zn(s)+2HBr(aq)→ZnBr2 (aq)+ H2 (g)
Zn0+2H++2Br-→Zn2++2Br-+H20
Zn0+2H+→Zn2++H20

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