Question

Answer 1

\(1.2Na+2H_2O\rightarrow2NaOH+H_2\\ 2K+2H_2O\rightarrow2KOH+H_2\\ Ba+2H_2O\rightarrow Ba\left(OH\right)_2+H_2\\2.K>Na>Ba>Mg>Al>Fe>Cu>Ag\\ 3. 2Na+2H_2O\rightarrow2NaOH+H_2\\ 2NaOH+CuSO_4\rightarrow Cu\left(OH\right)_2+Na_2SO_4\\ 2K+2H_2O\rightarrow2KOH+H_2\\ 2KOH+CuSO_4\rightarrow Cu\left(OH\right)_2+K_2SO_4\\ Ba+2H_2O\rightarrow Ba\left(OH\right)_2+H_2\\ Ba\left(OH\right)_2+CuSO_4\rightarrow BaSO_4+Cu\left(OH\right)_2\\ Mg+CuSO_4\rightarrow MgSO_4+Cu\\ 2Al+3CuSO_4\rightarrow Al_2\left(SO_4\right)_3+3Cu\\ Fe+CuSO_4\rightarrow FeSO_4+Cu\)