4Na+O2->2Na2O
-------------------------
C1)
C2H2==>C2H6==>C2H5Cl==>C2H5OH==>H3C-H2COOC2H5
1)C2H2+2H2==>C2H6(кат.t,Ni)
2)C2H6+Cl2==>C2H5Cl+HCl(кат. hv)
3)C2H5Cl+KOH==>C2H5OH+KCl
4)C2H5OH+C2H5COOH==>H3C-H2COOC2H5 (кат.H+)
1)Pb+H2SO4--->PbSO4+H2(выдел)
2)2Al+3Hg(NO3)2---->2Al(NO3)3+3Hg
3)Zn+MgCl2---->ZnCl2+Mg
4)Fe+ZnCl2---->FeCl2+Zn