a. \(C_3H_8\underrightarrow{^{to,xt}}CH_4+C_2H_4\)
\(2CH_4\underrightarrow{^{to,lln}}C_2H_2+3H_2\)
\(C_2H_2+H_2\underrightarrow{^{to,Pd/PdCO3}}C_2H_4\)
\(C_2H_4+HBr\underrightarrow{^{to}}C_2H_5Br\)
\(C_2H_5Br+KOH\rightarrow C_2H_5OH+KBr\)
b. \(CH\equiv CH+CH_2=CH_2\underrightarrow{^{to,xt}}CH_2=CH-C\equiv CH\)
\(C_2=CH-C\equiv CH+H_2\underrightarrow{^{to,xt}}CH_2=CH-CH=CH_2\)
\(nCH_2=CH-CH=CH_2\underrightarrow{^{to,xt,p}}\left(-CH_2-CH-CH-CH_2\right)_n\)
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