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

Question

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 (A) 170 kJ/mol (B) 50 kJ/mol (C) 80 kJ/mol (D) 220 kJ/mol

Tardigrade Admin · Accepted Answer

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

Q. Bond dissociation energy of CH4​ is 360kJ/mol and C2​H6​ is 620kJ/mol. Then bond dissociation energy of C−C bond is

170 kJ/mol

50 kJ/mol

80 kJ/mol

220 kJ/mol

Dissociation energy of methane =360kJmol−1 ∴ Bond energy of C−H bond =4360​=90kj Bond energy of ethane, 1r(C−C)+6(C−H)=620kJ/mol (C−C)+6×90=620 (C−C)+540=620 C−C=620−540 C−C=80kJmol−1. Bond dissociation of C−C bond =80kJmol−1.

Q. Bond dissociation energy of $C H_{4}$ is $360 k J / m o l$ and $C_{2} H_{6}$ is $620 k J / m o l$ . Then bond dissociation energy of $C - C$ bond is