Question

In class we discussed burning wood in a campground fire to heat your marshmallows to gooey goodness. We talked about how the cellulose or lignin of the wood is first pyrolyzed into small molecules that are then evaporated into the air. At this point the hot gaseous molecules are able to react with oxygen and burn, which is what makes the flames around the wood. In this complex example, select the exothermic process below. O pyrolysis of lignin to smaller molecules heating of marshmallows to "gooey goodness" reaction of hot gaseous molecules with oxygen O evaporation of small molecules into gas phase

Answer 1

Answer:-

The correct answer is given as follows,

reaction of hot gaseous molecules with oxygen.

because the reaction with oxygen will be combustion reaction and combustion is an exothermic reaction.