CaC2 + 2H2O -> C2H2 + Ca(OH)2 2C2H2 -(к)-> C4H4 C4H4 + 3H2 -> C4H10 ===================================== CaC2 + 2H2O -> CH#CH (# - тройная связь) 2 CH#CH -(катализатор)-> CH2=CH-C#CH CH2=CH-C#CH + 3H2 -> CH3-CH2-CH2-CH3