Предмет: Химия, автор: Maha4924

Используя ряд активности металлов, закончите уравнения тех реакций, которые осуществимы:
Mg+HCL=?
Al+H2SO4=?
Fe+H2SO=?
Cu+HCL=?
2)Из приведенных ниже вещевств составьте уравнения реакций этих с оксидом магния:
H2SO4
HCL
H3PO4
3)Закончите уравнение реакций с участием кислот и приведите названия образующихся солей:
Fe­2+O3+H2SO4=?
Fe+HCL=?
CaO+HCL=?
Al+HCL=?
ZnO+H3PO4=?

Ответы

Автор ответа: svetka1574
2
1) Mg + 2HCl -> MgCl2 + H2
   2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
   Fe + H2SO4 -> FeSO4 + H2
  Cu + HCl -> реакция не идёт

2) MgO + H2SO4 -> MgSO4 + H2O
    MgO + 2HCl -> MgCl2 + H2O
   3 MgO +2 H3PO4 -> Mg3(PO4)2 + 3H2O

3)  Fe2O3 + 3H2SO4 -> Fe2(SO4)3 +3 H2O  (сульфат железа(3))
     Fe + 2HCl -> FeCl2 + H2   (хлорид железа(2))
     CaO + 2HCl -> CaCl2 + H2O ( хлорид кальция)
    2Al + 6HCl -> 2AlCl3 + 3H2   ( хлорид алюминия)
    3ZnO + 2H3PO4 -> Zn3(PO4)2 +3 H2O  ( фосфат цинка)
Автор ответа: zinchakirina
0
№1
Mg+2HCl=MgCl2+H2
2Al+3H2SO4=Al2(SO4)3+3H2
Fe+H2SO4=FeSO4+H2
№2
MgO+H2SO4=MgSO4+H2O
MgO+2HCl=MgCl2+H2O
3MgO+2H3PO4=Mg3(PO4)2+3H2O
№3
Fe2O3+3H2SO4=Fe2(SO4)3+3H2O
Fe2(SO4)3 - сульфат железа(III)
Fe+2HCl=FeCl2+H2
FeCl2 - хлорид железа(II)
CaO+2HCl=CaCl2+H2O
CaCl2 - хлорид кальция
2Al+6HCl=2AlCl3+3H2
AlCl3 -  хлорид алюминия
3ZnO+2H3PO4=Zn3(PO4)2+3H2O
Zn3(PO4)2 - фосфат цинка


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