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JEEMAIN and NEET
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NEET PAST PAPERS
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2007
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Q)
Given that bond energies of $H-H$ and $Cl-Cl$ are 430 $kJ mol^{-1}$ and 240 $kJ mol^{-1}$ respectively and $\Delta_f H$ for $HCl$ is -90 $kJ mol^{-1}$. Bond enthalpy of $HCl$ is :
( A ) 290 $kJ mol^{-1}$
( B ) 425 $kJ mol^{-1}$
( C ) 245 $kJ mol^{-1}$
( D ) 380 $kJ mol^{-1}$
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