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Reaction 1
Cu (s) + 4HNO3 (aq) → Cu(NO3)2 (aq) + 2NO2 (g) + 2H2O (l)
Reaction 2
Cu(NO3)2 (aq) + 2NaOH (aq) → Cu(OH)2 (s) + 2NaNO3 (aq)
Reaction 3
Cu(OH)2 (s) → CuO (s) + H2O (l)
Reaction 4
CuO (s) + H2SO4 (aq) → CuSO4 (aq) + H2O (l)
Reaction 5
CuSO4 (aq) + Zn (s) → Cu (s) + ZnSO4 (aq)
Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)