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Zn+2HCl--->ZnCl2+H2
ZnCl2+Ag2SO4---->2AgCl+ZnSO4
ZnSO4+2NaOH--->Na2SO4+Zn(OH)2
Zn(OH)2---->ZnO+H2O
1, PbO + H2 ->(nhiệt độ ) Pb + H2O
2H2O -> ( điện phân ) 2H2 + O2
5O2 + 4P ->(nung nóng) 2P2O5
P2O5 + 3H2O -> 2H3PO4
2, 2H2 + O2 -> (nung nóng) 2H2O
K2O + H2O -> 2KOH
KOH + HCl -> KCl + H2O
\(CuO+H_2-t^o->Cu+H_2O \)
\(Cu+2H_2SO_4 (đặc)-t^o-> CuSO_4+SO_2+2H_2O\)
\(CuSO_2+BaCl_2--->CuCl_2+BaSO_4\)
\(CuCl_2+ Zn--->ZnCl_2+Cu\)
\(ZnCl_2+2NaOH--->Zn(OH)2+2NaCl\)
\(Zn(OH)_2-t^o-> ZnO+H_2O\)
a. Zn+2HCl----> ZnCl2+H2
b. FeCl3+3NaOH------>Fe(OH)3+3NaCl
c.P2O5+3H2O----->2H3PO4
d.2K+2H2O------>2KOH+H2
1) H2SO4 + 2NaOH -> Na2SO4 + 2H2O.
2) H2SO4 + Mg(OH)2-> Mg(OH)2 +2H2O.
3)2HNO3 + Zn(OH)3 -> Zn(NO3)2 + 2H2O.
1. \(H_2SO_4\)+ NaOH --> \(Na_2SO_4\)+ \(H_2O\)
\(H_2SO_4\)+ 2NaOH --> \(Na_2SO_4\)+\(H_2O\)
\(H_2SO_4\)+ 2NaOH \(\rightarrow\) \(Na_2SO_4\)+2\(H_2O\)
2. \(H_2SO_4\)+ \(Mg\left(OH_2\right)\)--> \(MgSO_4\)+\(H_2O\)
\(H_2SO_4\)+\(Mg\left(OH_2\right)\)\(\rightarrow\) \(MgSO_4\)+2\(H_2O\)
3. \(HNO_3\)+\(Zn\left(OH\right)_3\)-->\(Zn\left(NO_3\right)_2\)+\(H_2O\)
2\(HNO_3\)+\(Zn\left(OH\right)_3\)-->\(Zn\left(NO_3\right)_2\)+\(H_2O\)
2\(HNO_3\)+\(Zn\left(OH\right)_3\)\(\rightarrow\)\(Zn\left(NO_3\right)_2\)+2\(H_2O\)
\(\left(1\right)Zn+H_2SO_4\rightarrow ZnSO_4+H_2\\ \left(2\right)ZnSO_4+BaCl_2\rightarrow ZnCl_2+BaSO_4\\ \left(3\right)ZnCl_2+2NaOH\rightarrow Zn\left(OH\right)_2+2NaCl\\ \left(4\right)Zn\left(OH\right)_2\rightarrow^{t^o}ZnO+H_2O\)
\(2Zn+O_2\rightarrow2ZnO\)
\(ZnO+2HCl\rightarrow ZnCl_2+H_2O\)
\(ZnCl_2+2KOH\rightarrow Zn\left(OH\right)_2+2KCl\)
\(Zn\left(OH\right)_2+H_2SO_4\rightarrow ZnSO_4+2H_2O\)
2Zn +O2--->2ZnO
ZnO+2HCl--->ZnCL2+H2O
ZnCL2+2KOH--->Zn(OH)2+2KCl
Zn(OH)2+H2SO4--->ZnSO4+2H2O
\(Zn + H_2SO_4 \to ZnSO_4 + H_2\\ ZnSO_4 +BaCl_2 \to BaSO_4 + ZnCl_2\\ ZnCl_2 + 2KOH \to Zn(OH)_2 + 2KCl\\ Zn(OH)_2 \xrightarrow{t^o} ZnO + H_2O\)