Calculate the bond enthalpy of the $H-Cl$ bond from the following reaction:
$H_{2(g)} + Cl_{2(g)} \rightarrow 2 HCl_{(g)}$,$\Delta_{r} H^{\circ} = -185 \ kJ \ mol^{-1}$
(Given bond enthalpies of $H-H$ and $Cl-Cl$ bonds are $435.0 \ kJ \ mol^{-1}$ and $244 \ kJ \ mol^{-1}$ respectively.)

  • A
    $340 \ kJ \ mol^{-1}$
  • B
    $432 \ kJ \ mol^{-1}$
  • C
    $370 \ kJ \ mol^{-1}$
  • D
    $864 \ kJ \ mol^{-1}$

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