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Classification of Hydrocarbons

The sigma bon...

Question

The sigma bond energy of C-H bond in $C_{2} H_{6}$ is:

99 kcal

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140 kcal

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200 kcal

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60 kcal

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Solution

The correct option is A 99 kcal
Sigma bond is the first bond formed between any two atoms. Sigma bond energy is the amount of energy required to break the $C - H$ bond. In $C_{2} H_{6}$ the bond energy is the average value of all the bond dissociation energy. If the bond energy increases the stability of the bond increases but its reactivity decreases. Bond energy is expressed at room temperature.
The $C - H$ bond energy in $C_{2} H 6$ is 99 kcal or 413 KJ/mol.

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Similar questions

C - C

E_{H - H} = 104.2 k c a l m o l^{- 1}

E_{C - C} = 83.1 k c a l m o l^{- 1}

E_{C - H} = 98.8 k c a l m o l^{- l}

X_{H} = 2.1.

Δ H_{f}

C_{2} H_{4} = 12.5 k c a l

C = 171 k c a l

H_{2} = 104.3 k c a l

C - H = 99.3 k c a l

C = C

360 k c a l m o l^{- 1}

C - - H

k c a l m o l^{- 1}

C H_{4}

368 kcal/mol

C_{2} H_{6}

628 kcal/mol

C - C

kcal/mol

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