1) Zn²⁺+S²⁻=ZnS
ZnCL2+H2S-->ZnS+2HCL
Zn²⁺+2CL⁻+2H⁺+S²⁻-->ZnS↓+2H⁺+2CL⁻
2) Zn²⁺+2OH=Zn(OH)2
ZnCL2+2NaOH-->Zn(OH)2+2NaCL
Zn²⁺+2CL⁻+2Na⁺+2OH⁻-->Zn(OH)2↓+2Na⁺+2CL⁻
3) H⁺+OH⁻=H2O
HCL+NaOH-->HOH+NaCL
H⁺+CL⁻+Na⁺+OH⁻-->HOH+Na⁺+CL⁻
4) Fe³⁺+3OH⁻-->Fe(OH)3
FeCL3+3NaOH-->Fe(OH)3↓+3NaCL
Fe³⁺+3CL⁻+3Na⁺+3OH⁻-->Fe(OH)3+3Na⁺+3CL⁻
5) PbS+2H⁺-->H2S+Pb²⁺
PbS+2HCL-->H2S+PbCL2
PbS+ 2H⁺+2CL⁻-->H2S↑+Pb²⁺+2CL⁻
6) Mg(OH)2+2H⁺-->Mg²⁺+2H2O
Mg(OH)2+H2SO4-->MgSO4+2H2O
Mg(OH)2+2H⁺+SO⁻²₄-->Mg+SO⁻²₄+2H2O
Объяснение:
1) Zn²⁺+S²⁻=ZnS
ZnCL2+H2S-->ZnS+2HCL
Zn²⁺+2CL⁻+2H⁺+S²⁻-->ZnS↓+2H⁺+2CL⁻
2) Zn²⁺+2OH=Zn(OH)2
ZnCL2+2NaOH-->Zn(OH)2+2NaCL
Zn²⁺+2CL⁻+2Na⁺+2OH⁻-->Zn(OH)2↓+2Na⁺+2CL⁻
3) H⁺+OH⁻=H2O
HCL+NaOH-->HOH+NaCL
H⁺+CL⁻+Na⁺+OH⁻-->HOH+Na⁺+CL⁻
4) Fe³⁺+3OH⁻-->Fe(OH)3
FeCL3+3NaOH-->Fe(OH)3↓+3NaCL
Fe³⁺+3CL⁻+3Na⁺+3OH⁻-->Fe(OH)3+3Na⁺+3CL⁻
5) PbS+2H⁺-->H2S+Pb²⁺
PbS+2HCL-->H2S+PbCL2
PbS+ 2H⁺+2CL⁻-->H2S↑+Pb²⁺+2CL⁻
6) Mg(OH)2+2H⁺-->Mg²⁺+2H2O
Mg(OH)2+H2SO4-->MgSO4+2H2O
Mg(OH)2+2H⁺+SO⁻²₄-->Mg+SO⁻²₄+2H2O
Объяснение: