![]() The termination step leading to the product is one where another bromine radical joins with the ethyl radical. This goes through an initiation step (forming 2 bromine radicals), followed by propagation to the alkane (forming a secondary ethyl radical), followed by a termination step. Br2 in the presence of a radical initiator (such as light or heat) will add to ethane to form 2-bromoethane as the major product in a radical mechanism. The question is not very specific, so there is more than just one answer, but I'm assuming you are referring to a radical bromination of an alkane (ethane) versus an electroph ilic bromination of an alkene (ethene). A secondary school revision resource for AQA GCSE Science about the Earth, fats, polymers and ethanol from oils. Catalytic cracking is acheived by the use of a catalyst and lower temperatures. Pentyl radicals -> Propyl radical + Ethene. ![]()
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