Question -
The bond dissociation energy of C - H in CH4 from the equation C(g) + 4H(g) ⟶CH4(g) ΔH = -397.8 Kcal is
Options:
A .  +99.45 kcal
B .  -99.45 kcal
C .  +397.8 kcal
D .  -397.8 kcal
Answer: Option A : A The equation for bond dissociation can be given by CH4(g) ⟶ C(g) + 4H(g)ΔH = 397.8 kcal There are in total of 4 C - H bonds Therefore the energy needed to break a C - H bond can be given by 397.84= + 99.45 kcal
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