Question

Consider the generic reaction below:

A (aq) + 2 B (aq) ⇌ C (aq) + D (aq)

Where ΔG^o is -10.2 kJ for the reaction
True False  If the reaction shown is at equilibrium, ΔG^o is equal to zero
True False  Under certain conditions ΔG_nonstandard is negative, the value of ΔG_nonstandard is the amount of energy free to do work under those conditions
True False  This reaction will always be spontaneous because ΔG^o is negative
True False  ΔG_nonstandard allows us to determine the equilibrium constant, K, for the reaction

Answer 1

1)   If the reaction shown is at equilibrium, ΔG^o is equal to zero ( TRUE)

reason :

if ΔG^o is equal to zero   ΔG^o = - R T ln K

K = 1 . equilibrium constant is equal to 1 at equilibrium

2)   Under certain conditions ΔG_nonstandard is negative, the value of ΔG_nonstandard is the amount of energy free to do work under those conditions (True)

3) This reaction will always be spontaneous because ΔG^o is negative (TRUE)

reason : for spontaneous reaction ΔG^o is negative

4)   ΔG_nonstandard allows us to determine the equilibrium constant, K, for the reaction ( False )

reason : because equilibrium constant is determined by ΔG^o but not ΔG_nonstandard