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Thermal Decomposition of Alkanes

Question

The hydrocarbons obtained by pyrolysis of ethane areand.
$C_{2} H_{4}, C_{2} H_{2}$
$C_{2} H_{4}, C H_{4}$
$C_{2} H_{2}, C_{6} H_{6}$
$C H_{4}, C_{2} H_{2}$

A

C_{2} H_{4}, C_{2} H_{2}

B

C H_{4}, C_{2} H_{2}

C

C_{2} H_{2}, C_{6} H_{6}

D

C_{2} H_{4}, C H_{4}

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Solution

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Pyrolysis is a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen. It involves the simultaneous change of chemical composition and physical phase and is irreversible. The reaction is:

$3 C_{2} H_{6} 460^{o} C - -- \to 2 C_{2} H_{4} + 2 C H_{4} + H_{2}$

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