Answer the following questions:
Answer variants:
\(2Fe\)(s) + \(4H_2O\)(g) → \(Fe_3O_3\)(s) + \(4H_2\)(g)
decomposition reaction
\(CuO\) + \(2HCl\) → \(CuCl_2\) + \(H_2O\)
\(2Pb(NO_3)_2\) \(\xrightarrow[]{Heat}\) \(2PbO\) + \(4NO_2\) + \(O_2\)
\(3Pb(NO_3)_2\) \(\xrightarrow[]{Heat}\) \(2PbO\) + \(3NO_2\) + \(O_2\)
1. Balance the following chemical equation: \(Pb(NO_3)_2\) → \(PbO\) + \(NO_2\) + \(O_2\)
2. On adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue green. Predict the new compound formed which imparts a blue green colour to the solution.