C2H4+H2O--->C2H5OH
C2H5OH+HCl---->C2H5Cl+H2O
C2H5Cl+Cl2----->C2H5Cl2+HCl
C2H5Cl2+2KOH(спирт)---->C2H2+2KCl+2H2O
C2H2+HI---->C2H3I
C2H3I+H2O---->C2H3OH+HI
2)
C3H5(OH)3+3HNO3---->C3H5(ONO2)3+3H2O
n(C3H5(OH)3)=78,2/92=0,85моль
n(C3H5(ONO2)3)=n(C3H5(OH)3)=0,85моль
m(C3H5(ONO2)3)=0,85*227=192,95г
W=181,6/192,95*100%=94%