Question

Select the true statement below.

  

when Q < K, the system can release no more free energy

   

when ΔG > 0, the system can release free energy

when ΔG < 0, the system can release free energy until Q = K

when ΔG > 0, ΔG is the maximum useful work obtainable from the system

  

when ΔG = 0, ΔG° must also = 0

Answer 1

when Q < K, the system can release no more free energy; FALSE, it will, since Q < K implies that there are more reactants than products, so this will proceed forward, i.e. release free energy

   

when ΔG > 0, the system can release free energy; false, it will NOT release free energy, since the reaction will NOT occur spontaneously

when ΔG < 0, the system can release free energy until Q = K --> TRUE, since the reaciton will occur forward until Q = K

when ΔG > 0, ΔG is the maximum useful work obtainable from the system ; false, there is no waqy to calcualte, since this will not occur

when ΔG = 0, ΔG° must also = 0 ; false, dG° is standard value for any species, dG is the ACTUAL value, i.e. T/P/(Concentraitons