The standard free energy of formation, G f , is the freeenergy change for the formation of

The standard free energy of formation, ΔG°_f, is the freeenergy change for the formation of a substance at 25 °C and 1 atm pressure from its elements in their natural states under the same conditions.

(a) Calculate the equilibrium constant for the interconversion of the following alkenes, given the standard free energy of formation of each. Indicate which compound is favored at equilibrium.

(b) What does the equilibrium constant tell us about the rate at which this interconversion takes place?

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AGI H₂C CH3 H₂C S-E-XC H₂C C-C-H H₂C CH3 79.0 kJ mol-¹ 18.9 kcal mol-¹ C=C CH 3 CH3 75.9 kJ mol-¹ 18.1 kcal mol-¹