![]() If products have more Gibbs free energy than the reactants (i.e. ![]() change in Gibbs free energy is negative) then the reaction is spontaneous/exergonic irrespective of whether it is exothermic or endothermic. Hence, if products have less Gibbs free energy than the reactants (i.e. On the other hand, if reactant is more stable than products then for this reaction to happen there has to some input of energy from surrounding. In a reaction, if reactants are unstable (Having more energy) and the products are stable (Having less energy), then the reaction tends to move forward spontaneously without any input from surrounding. It is the Gibbs free energy which determines whether the reaction will proceed spontaneously to equilibrium without any input from surrounding. Since we are on this topic, let's address two more terms - Gibbs free energy and enthalpy! The entropy increases, but in this case, the entropy of the universe increases because we release carbon dioxide into the surrounding! One would argue that storage of such high energy molecule is against the second law, as entropy of the body is not increasing in this reaction. Here's an interesting fact: The human body consumes carbohydrates, breaks it down and stores its energy as ATP, which is a high energy molecule. The distance between the molecules increases from solid to liquid and thus, the entropy increases! When the ice melts, solid gets converted into it's liquid form. Melting of ice is a good example which illustrates the second law of thermodynamics. Hence, they have more randomness and more entropy value. On the on the other hand, in liquids, the distance between the molecules is more. Hence, the randomness in molecules is less. The second law of thermodynamics says, "The entropy of the universe goes on increasing over time."Ī solid has closely placed molecules. ![]() Let's convert these monsters into cute little pixies :) It's the very reason I call it the monsters of bioenergetics. It says, "Energy can neither be created nor be destroyed but is converted from one form to another."īut can you explain the second law of thermodynamics? A bit puzzled, aren't you? The first law of thermodynamics is very famous. ![]()
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