Methanol may be manufactured using the following reaction at

Methanol may be manufactured using the following reaction at 25o C:

CO(g) + 2H2 (g) ? CH3OH(g)
The free energy of this reaction is -24.7 kJ. Calculate the equilibrium constant for this reaction.
A. 1.00
B. 4.7 x 10-5
C. 2.30
D. 2.1 x 104
E. all the above
F. none of the above

Solution

G=-RTln(k)

or -24.7*10^3=-8.31*298*ln(k)

or k=2.1*10^4