The chemical reaction shown consists of the following steps:

C2H4 reacts with C2H5OH (ethanol) to form C2H5COOC2H5 (ethyl acetate) in the presence of a catalyst.

C2H5COOC2H5 (ethyl acetate) undergoes hydrolysis to form C2H5COOH (acetic acid) and C2H5OH (ethanol).

C2H5COOH (acetic acid) can further react through different pathways to form various products like C15H31COOH (a fatty acid), as shown in the overall reaction.

Overall, this reaction sequence involves esterification, hydrolysis, and fatty acid synthesis reactions.