Bond dissociation enthalpy of H2, Cl2 and HCl are 434, 242 and 431 kJ mol$-$1 respectively. Enthalpy of formation of HCl is

Question

Bond dissociation enthalpy of H₂, Cl₂ and HCl are 434, 242 and 431 kJ mol^$-$1 respectively. Enthalpy of formation of HCl is

$-$ 93 kJ mol^$-$1

245 kJ mol^$-$1

93 kJ mol^$-$1

$-$ 245 kJ mol^$-$1

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