Which reaction is a double displacement reaction?
2KBr+Cl_(2)->2KCl+Br_(2)
3Ca(OH)_(2)+Al_(2)(SO_(4))_(3)-3CaSO_(4)+2Al(OH)_(3)
None of the choices are correct.
2H+O_(2)-2H_(2)O
3Mg+Fe_(2)O_(3)-2Fe+3MgO