Ecology 5th Edition by Manuel Molles

Exercise 2

In general, what must be true of the chemical energy of the products of chemosynthesis compared to that of the reactants, for instance, the chemical energy of the product S 0 (elemental sulfur) versus that of the reactant H 2 S shown in figure 7.7?
Figure 7.7 Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea.