Hoàn thành sơ đồ phản ứng:
1 CH4 → C2H2 → C4H4 → C4H6 → polibutadien
2 CaCO3 → ? → CaC2 → C2H2 \(\left[ \begin{array}{l}? -> C2H6\\? -> PVC\end{array} \right.\)
3 Metan → axitilen → etilen → etanol → axit axetic → natri axetat
4 Tinh bột → glucozo → ancol etylic → andehit axetic

Đáp án:
Giải thích các bước giải:
$1/$
$2CH_4 \xrightarrow{t^o,làm\ lạnh\ nhanh} C_2H_2 +3H_2$
$2C_2H_2 \xrightarrow{t^o,xt,p} C_4H_4$
$C_4H_4 + H_2 \xrightarrow{t^o,Pd} C_4H_6$
$nCH_2=CH-CH=CH_2 \xrightarrow{t^o,xt,p} (-CH_2-CH=CH-CH_2-)_n$
$2/$
$CaCO_3 \xrightarrow{t^o} CaO + CO_2$
$CaO + 3C \xrightarrow{t^o} CaC_2 +CO$
$CaC_2 + 2H_2O → Ca(OH)_2 + C_2H_2$
$C_2H_2 + 2H_2 \xrightarrow{t^o,PbCO_3} C_2H_4$
$C_2H_4 + H_2 \xrightarrow{t^o,Ni} C_2H_6$
$C_2H_2 + HCl → CH_2=CH-Cl$
$nCH_2=CH-Cl \xrightarrow{t^o,xt,p} (-CH_2-CH(Cl)-)_n$
$3/$
$2CH_4 \xrightarrow{t^o,làm\ lạnh\ nhanh} C_2H_2 +3H_2$
$C_2H_2 + 2H_2 \xrightarrow{t^o,PbCO_3} C_2H_4$
$C_2H_4 + H_2O \xrightarrow{t^o,xt} C_2H_5OH$
$C_2H_5OH + O_2 \xrightarrow{men\ giấm} CH_3COOH + H_2O$
$CH_3COOH + NaOH → CH_3COONa + H_2O$
$4/$
$(-C_6H_{10}O_5-)_n + nH_2O \xrightarrow{t^o,xt} nC_6H_{12}O_6$
$C_6H_{12}O_6 \xrightarrow{t^o,men\ rượu} 2CO_2 + 2C_2H_5OH$
$C_2H_5OH + CuO \xrightarrow{t^o} Cu + CH_3CHO + H_2O$
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