Kc for the reaction, Fe2++Zn→Zn2++Fe is 1023, The standard free energy change is
+1.36 K cal mol−1
−1.36 K cal mol−1
+13.6 K cal mol−1
−13.6 K cal mol−1
ΔG0=−2.303 RT−log K=−2.303×2×298×log1023=−13,580 cal mol−1
The enthalpy of atomisation of CH4 and C2H6 are 360 and 620 k cal mol−1 respectively. The C - C bond energy is expected to be ?