Recall that ΔG˚rxn and K are related to each other:
Also recall that if:
• ΔG < 0 or ΔG = (–); the reaction is spontaneous
• ΔG = 0; the reaction is at equilibrium
• ΔG > 0 or ΔG = (+); the reaction is non-spontaneous
According to Le Châtelier’s principle and the dependence of free energy on reactant and
product concentrations, which statement is true? (Assume that both the reactants and
products are gaseous.)
(a) A high concentration of reactants relative to products results in a more spontaneous reaction than one in which the reactants and products are in their standard states.
(b) A high concentration of products relative to reactants results in a more spontaneous reaction than one in which the reactants and products are in their standard states.
(c) A reaction in which the reactants are in standard states, but in which no products have formed, has a ΔGrxn that is more positive than ΔG˚rxn.
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