Question

Why do unsaturated compounds undergo incomplete combustion?

Answer 1

This happens because of incomplete combustion of the saturated hydrocarbon in the air. ... The flame is sooty because the percentage of carbon is comparatively higher than that of alkanes and so does not get completely oxidized in air. However, when acetylene and pure oxygen burn, a non-sooty, blue flame is produced

Answer 2

This happens because of incomplete combustion of the saturatedhydrocarbon in the air. ... The flame issooty because the percentage of carbon is comparatively higher than that of alkanes and so does not get completely oxidized in air. However, when acetylene and pure oxygen burn, a non-sooty, blue flame is produced.