cac2 -> c2h2 -> c2h6 -> ch3ch2cl -> c4h10 решите уравнение
CaC2+2H2O=>C2H2+Ca(OH)2
c2h2+2H2 Ni =>C2H6
C2H6+CL2=>C2H5CL+HCL
2C2H5CL+2Na=>C4H10+2NaCL