Question

NEED HELP ASAP! I will post the observation now in different question​

Answer 1

Answer:

A. NO2 gas released, $NO_{3}^{-}$ ion is present.

The residue is (ZnO) Zn oxide, $Zn^{2+}$ ion is present.

The white salt is Zn(NO3)2.

B.     CO2 gas released, $CO_{3}^{2-}$ ion present.

The residue ia (CuO ) Cu(||) oxide, $Cu^{2+}$ ion present .

The green salt is CuCO3.

C.   CO2 gas released, $CO_{3}^{2-}$ ion present.

The residue Pb(||) oxide, $Pb^{2+}$ ion is present.

The white salt is PbCO3.

D. CO2 gas released, $CO_{3}^{2-}$ ion present.

The residue is (ZnO) Zn oxide, $Zn^{2+}$ ion is present.

The white salt is ZnCO3.