А) MgCl2+H2O=MgO+2HCl
MgCl2+2NaOH=Mg(OH)2+2NaCl
MgCl2+2AgNO3=2AgCl+Mg(NO3)2
Б)2Al+3Br2=2AlBr3
2Al+6HI=2AlI3+3H2
В)SO3+H2O=H2SO4
SO3+MgO=MgSO4
SO3+2NaOH=Na2SO4+H2O
Г)H2SO4+MgO=MgSO4+H2O
2H2SO4+14HI=7I2+H2S+S+8H2O
H2SO4+2NaOH=Na2SO4+2H2O
