Bond dissociation energy of CH ₄ is 360 ~kJ / mol and C ₂ H ₆ is 620 ~kJ / mol . Then bond dissociation energy of C - C bond is

Step-by-step solution

Dissociation energy of methane =360 ~kJ ~mol ⁻¹ Bond energy of C - H bond = 360 4 =90 ~kJ Bond energy of ethane, 1( C - C )+6( C - H )=620 ~kJ / mol (C-C)+6 90=620(C-C)+540=620C-C=620-540 C - C =80 ~kJ ~mol ⁻¹ Bond dissociation of C - C bond =80 ~kJ ~mol ⁻¹ .