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The bond energy of an O -H bond is 109 K...

The bond energy of an `O -H` bond is 109 K. cal `"mole"^(-1)`. When a mole of water is formed

A

218 kcal is released

B

109 kcal is released

C

218 kcal is absorbed

D

109 kcal is absorbed

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Verified by Experts

The correct Answer is:
B
Energy absorbed in the dissociation of 1 mole of `H_2O= 2 xx 109 =218 ` kcal. This
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NIKITA PUBLICATION-Chemical Thermodynamics & Energetics-QUESTION FROM COMPETITIVE EXAM
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