Đáp án:
$29.C_{4}H_{10} \xrightarrow{\text{$t^{o} ,crackinh$}} CH_{4} + C_{3}H_{6}$
$30.C_{4}H_{10} \xrightarrow{\text{$t^{o} ,crackinh$}} C_{2}H_{6} + C_{2}H_{4}$
$31.C_{5}H_{12} \xrightarrow{\text{$t^{o} ,crackinh$}} CH_{4} + C_{4}H_{8}$
$32.C_{5}H_{12} \xrightarrow{\text{$t^{o} ,crackinh$}} C_{2}H_{6} + C_{3}H_{6}$
$33.C_{5}H_{12} \xrightarrow{\text{$t^{o} ,crackinh $}} C_{3}H_{8} + C_{2}H_{4}$
$34.C_{4}H_{10} \xrightarrow{\text{$t^{o} , xt$ }} C_{4}H_{8} + H_{2} $
$35.C_{3}H_{8} \xrightarrow{\text{$t^{o} , xt$ }} C_{3}H_{6} + H_{2} $
$36.C_{5}H_{12} \xrightarrow{\text{$t^{o} , xt$ }}C_{5}H_{10} + H_{2} $
$37.CH_{3}COONa + NaOH_{(r)} \xrightarrow{\text{$CaO,t^{o}$ }} CH_{4} + Na_{2}CO_{3}$
