For the reactions, I.CH4(g)→C(g)+4H(g);ΔH=x1 II.C2H6(g)→2C(g)+6H(g);ΔH=x2from I and II, bond energy of C - C bond is:
A
x1+x2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
x2−x1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
x2+1.5x1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
x2−1.5x1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is Cx2−1.5x1 (i)CH4(g)→C(g)+4H(g);ΔH=xforfourC−Hbonds ∴ BE of (C−H) bond =x14 (ii)C2H6(g)→2c(g)+6H(g) ΔH=x2=(BE)c−c+6×(BE)C−H x2=BEC−C+×x14 (BE)C−C=x2−1.5x1