When the ΔG°' of a chemical reaction is positive (K'eq

Question

When the ΔG°' of a chemical reaction is positive (K'eq < 1.0)under standard conditions,
A)reactants and products are at equilibrium.
B)work can be done under these conditions.
C)reactants predominate over products.
D)the reaction is spontaneous to the right.
E)the reaction is exothermic.

Quizplus · Accepted Answer

When ΔG°' of a chemical reaction is positive under standard conditions, it means that the products have a higher free energy than the reactants. Therefore, the reaction tends to shift towards the reactants, and they predominate over the products. This also implies that the equilibrium constant (K'eq) is less than 1.0, indicating that the reaction is more likely to favor the reactants. Option A is incorrect as the reaction is not at equilibrium. Option B is incorrect as work cannot be done under standard conditions as the reaction is not spontaneous. Option D and E are incorrect as they suggest that the reaction is spontaneous towards the products, which is not the case with a positive ΔG°'.

When the ΔG°' of a Chemical Reaction Is Positive (K'eq