Question

which of the following will burn with a yellow flame C2H4, C2H6 and why

Answer 1

Step-by-step explanation:

C2H4 will burn with a yellow flame.

It is because its an unsaturated carbon compound and they undergo incomplete combustion in air and hence give soot and yellow flame on combustion.

Answer 2

Here is your answer

Unsaturated compounds burn with a yellow flame. This is because of incomplete combustion of the compound because of strong double or triple bond between the carbon atoms.

So,

C2H4(ethene), which is alkene (unsaturated hydrocarbon), will burn with yellow flame.

HOPE IT IS USEFUL