Здiйснити перетворення CaC2 - C2H2-C2H4-C2H6-C2H5Br - C4H10
CaC2 + 2H2O ⇒ Ca(OH)2 + CH≡CH CH≡CH + H2 =t°,kat⇒ CH2=CH2 CH2=CH2 + H2 =t°,kat⇒ CH3-CH3 CH3-CH3 + Br2 ⇒ CH3-CH2-Br + HBr CH3-CH2-Br + 2Na + Br-CH2-CH3 ⇒ CH3-CH2-CH2-CH3 + 2NaBr
CaC2 + 2H2O -> CH=-CH + Ca(OH)2 CH=-CH + H2 -> CH2=CH2 (t,kat) CH2=CH2 + H2 -> CH3-CH3 (t, kat) CH3-CH3 + Br2 -> CH3-CH2-Br + HBr CH3-CH2-Br + 2Na + Br-CH2-CH3 -> CH3-CH2-CH2-CH3 + 2NaBr