In the storage of flammable liquids, if the composition of the vapor-air mixture above the liquid surface falls within the flammability limits, a floating roof tank would need to used or the tank blanketed with inert gas. Check if the vapor composition for the liquids below will fall within their flammability range at atmospheric pressure and (i) 5°C and (ii) 25°C.
(a) Ethanol
(b) N-Heptane
(c) Nitrobenzene
(d) Gasoline