1) Cl2+H2=2HCl
2HCl+Mg=MgCl2+H2
MgCl2+2AgNO3=2AgCl+Mg(NO3)2
2) HBr+KOH=KBr+H2O
2KBr + 2H2SO4 = Br2 + SO2 + K2SO4 + 2H2O
3Br2+2Al=2AlBr3
3) CaF2+H2SO4=CaSO4+2HF
2HF+2Na=2NaF+H2
1) Cl2+H2=2HCl
2HCl+Mg=MgCl2+H2
MgCl2+2AgNO3=2AgCl+Mg(NO3)2
2) HBr+KOH=KBr+H2O
2KBr + 2H2SO4 = Br2 + SO2 + K2SO4 + 2H2O
3Br2+2Al=2AlBr3
3) CaF2+H2SO4=CaSO4+2HF
2HF+2Na=2NaF+H2