Zn+H2SO4==ZnSO4+H2↑
ZnSO4+2NaOH==Zn(OH)2↓+Na2SO4
Zn+CuCI2==ZnCl2+Cu
NaOH+CuCl==Cu(OH)2↓+NaCl
H2O==（电解）H2↑+O2↑
2Cu+O2==2CuO
CuO+H2SO4==CuSO4+H2O
Zn+O2==ZnO
2NaCl+2H2O==（电解）2NaOH+H2↑+Cl2↑
H2+Cl2==（点燃）2HCl
2Cl2+2NaOH==NaCl+NaClO+H2O
Zn+Cl2==（点燃）ZnCl2
Cu+Cl2==（点燃）CuCl2
您自己数数,估计不止15个了.