C2H5OH(g) + 302(g) → 2CO2(g) + 3H2O(g) + heat
reaction type

Combustion

Explanation:

The reaction type is a combustion reaction;

        Ethanol + oxygen gas  →  carbon dioxide + water

Now;

  Ethanol is the fuel and oxygen gas rapidly combines with it to form carbon dioxide and water.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.