Why is there a net release of energy during the reaction of hydrogen and oxygen to produce water?
a) it takes a lot of energy to isolate hydrogen and oxygen gases in separate containers compared to the energy needed to contain water.
b) extra energy has to be brought in to get the reaction going and this represents the difference.
c) different energies are associated with bonds in the reactants compared with those of the products.
d) the production of water is typically associated with a lower energy state.