MCQOPTIONS
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| 1. |
If the bond energies of \[H-H\], \[Br-Br\] and \[HBr\] are 433, 192 and 364 \[kJ\,mo{{l}^{-1}}\] respectively, the \[\Delta {{H}^{o}}\] for the reaction, \[{{H}_{2}}(g)+B{{r}_{2}}(g)\to 2HBr(g)\] is [CBSE PMT 2004] |
| A. | + 261 kJ |
| B. | ? 103 kJ |
| C. | ? 261 kJ |
| D. | + 103 kJ |
| Answer» C. ? 261 kJ | |