1) CaC₂ + 2H₂O->  Ca(OH)₂+ C₂H₂
C₂H₂ + H₂-> CH₂=CH₂ (Kt=Ni,t)
CH₂=CH₂+ HCl-> CH₃-CH₂Cl
2CH₃-CH₂Cl + 2Na -> CH₃-CH₂-CH₂-CH₃+ 2NaCl
CH₃-CH₂-CH₂-CH₃ + Cl₂-> CH₃-CHCl-CH₂-CH₃+ HCl (hv)
CH₃-CHCl-CH₂-CH₃ + KOH(водн/) -> CH₃-CHOH-CH₂-CH₃ + KCl

2) CaC₂ + 2H₂O->  Ca(OH)₂+ C₂H₂
3C₂H₂ -> C₆H₆ (Kt=Cакт,t)
C₆H₆ + Cl₂-> C₆H₅Cl + HCl 
C₆H₅Cl + NaOH -> C₆H₅OH + NaCl
2C₆H₅OH + 2K -> 2C₆H₅OK + H₂

4) CaC₂ + 2H₂O->  Ca(OH)₂+ C₂H₂
C₂H₂ + H₂-> CH₂=CH₂ (Kt=Ni,t)
CH₂=CH₂ + [O] + H₂O -> OH-CH₂-CH₂-OH (Kt=KMnO₄,t)
2OH-CH₂-CH₂-OH + 2Na ->2OH-CH₂-CH₂-ONa + H₂

3) CaC₂ + 2H₂O->  Ca(OH)₂+ C₂H₂
C₂H₂ + H₂O -> CH₃COH (Kt=HgSO₄,t)
CH₃COH + Ag₂O -> CH₃COOH + 2Ag (NH₃,t)
3CH₃COOH + OH-CH₂-CH(OH)-CH₂-OH -> 
CH₃-C-O-O-CH₂-CH(O-O-C-CH₃)-CH₂-O-O-C-CH₃ + 3H₂O
CH₃-C-O-O-CH₂-CH(O-O-C-CH₃)-CH₂-O-O-C-CH₃ + NaOH -> CH₃-C-O-O-3CH₃COONa + OH-CH₂-CH(OH)-CH₂-OH
последняя реакция в фото ниже.
 
3) CaC₂ + 2H₂O->  Ca(OH)₂+ C₂H₂
3C₂H₂ -> C₆H₆ (Kt=Cакт,t)
C₆H₆ + Cl₂-> C₆H₅Cl + HCl 
C₆H₅Cl + NaOH -> C₆H₅OH + NaCl
последняя реакция в фото 2