решить
С2Н2+O2
СH3-C---C-CH3+HCL
CH3-C---C-CH+CL2
1) С2Н2+O2 = 2CO + H2
2) СH3-C---C-CH3+HCL = CH3-CH--C(Cl)CH3
3) CH3-C---C-CH+CL2 = CH3-CH--C(Cl)2