KCET2012ChemistryElectrochemistry
The equilibrium constant of a reaction is 0.008 at 298 ~K . The standard free energy change of the reaction at the same temperature is
Options
- A-11.96 ~kJ
- B-5.43 ~kJ
- C-8.46 ~kJ
- D+ 11.96 ~kJ
Correct answer
D. + 11.96 ~kJ
Step-by-step solution
Standard free energy change, aligned G ^ &=-2.303 RT K &=-2.303 8.314 298 0.008 &=-2.303 8.314 298 (3 2-3 10) &=-2.303 8.314 298 (0.903-3.0) &=-2.303 8.314 298 (-2.097) &=+11965.16 ~J =+11.96 ~kJ aligned