Question

FeO+2H=H2O+Fe2 2H+Cu(OH)2=Cu2+2H2O

Answer 1

FeO+2HCl=H2O+FeCl2

FeO+2H=H2O+Fe(2+)

2HCl+Cu(OH)2=CuCl2+2H2O

 2H+Cu(OH)2=Cu(2+)+2H2O