Rozwiąż schemat : etan -> chloroetan -> eten -> 1,2 dibromoetan -> eten -> etanol -> eten -> bromoetan -> butan
CH₃-CH₃ + Cl₂ ----hV----> CH₃-CH₂-Cl + HCl
CH₃-CH₂-Cl + KOH -----alkohol-----> CH₂=CH₂ + KCl + H₂O
CH₂=CH₂ + Br₂ -------> CH₂Br-CH₂Br
CH₂Br-CH₂Br + Zn ------> CH₂=CH₂ + ZnBr₂
CH₂=CH₂ + H₂O ----H⁺----> CH₃-CH₂-OH
CH₃-CH₂-OH -----Al₂O₃-----> CH₂=CH₂ + H₂O
CH₂=CH₂ + HBr -------> CH₃-CH₂-Br
2CH₃-CH₂-Br + 2Na --------> CH₃-CH₂-CH₂-CH₃ + 2NaBr
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CH₃-CH₃ + Cl₂ ----hV----> CH₃-CH₂-Cl + HCl
CH₃-CH₂-Cl + KOH -----alkohol-----> CH₂=CH₂ + KCl + H₂O
CH₂=CH₂ + Br₂ -------> CH₂Br-CH₂Br
CH₂Br-CH₂Br + Zn ------> CH₂=CH₂ + ZnBr₂
CH₂=CH₂ + H₂O ----H⁺----> CH₃-CH₂-OH
CH₃-CH₂-OH -----Al₂O₃-----> CH₂=CH₂ + H₂O
CH₂=CH₂ + HBr -------> CH₃-CH₂-Br
2CH₃-CH₂-Br + 2Na --------> CH₃-CH₂-CH₂-CH₃ + 2NaBr