MCQOPTIONS
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| 1. |
If the bond dissociation energies of \[XY,\,{{X}_{2}}\]and \[{{Y}_{2}}\] (all diatomic molecules) are in the ratio of 1 : 1 : 0.5 and \[{{\Delta }_{f}}H\] for the formation of \[XY\] is \[-200\,kJ\,mol{{e}^{-1}}\]. The bond dissociation energy of \[{{X}_{2}}\] will be [AIEEE 2005] |
| A. | \[100\,kJ\,mo{{l}^{-1}}\] |
| B. | \[800\,kJ\,mo{{l}^{-1}}\] |
| C. | \[300\,kJ\,mo{{l}^{-1}}\] |
| D. | \[400\,kJ\,mo{{l}^{-1}}\] |
| Answer» C. \[300\,kJ\,mo{{l}^{-1}}\] | |