Cac2-c2h2-c2c4-c2h6-c2h5oh
CaC2 + 2H2O = Ca(OH)2 + C2H2 C2H2 + H2 = C2H4 C2H4 + H2 = C2H6 C2H6 + Br2 = C2H5Br + HBr C2H5Br + NaOH = C2H5OH + NaBr