The gas with the highest heat of combustion is `:`

Options

A. Methane
B. Ethane
C. Ethylene
D. Acetylene

Answer

2

Explanation

Ethane has the highest heat of combustion.
`{:(CH_(4)+2O_(2)rarrCO_(2)+2H_(2)O,,DeltaH=-890.4KJ mol e^(-1)),(2C_(2)H_(6)+7O_(2)rarr4CO_(2)+6H_(2)O,,DeltaH=-3131.52KJ mol e^(-1)),(C_(2)H_(4)+3O_(2)rarr2CO_(2)+2H_(2)O,,DeltaH=-1411.4KJ mol e^(-1)),(2C_(2)H_(2)+5O_(2)rarr4CO_(2)+2H_(2)O,,DeltaH=-900.2KJmol e^(-1)):}`