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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Thermodynamics
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The bond energy of $O-H$ bond is $109\: kcal/mol$. The value of $ \Delta H_f$ of $H2_O(g)$ is

$\begin {array} {1 1} (A)\;-218\: kcal/mol & \quad (B)\;109\: kcal/mol \\ (C)\;\text{Can’t be determined from given data} & \quad (D)\;218 \: kcal/mol \end {array}$

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1 Answer

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We require bond dissociation energies of $H-H$ and $O-O$ bonds.
Ans : (C)
answered Mar 15, 2014 by thanvigandhi_1
 

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