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HardChemistry
+4 / -1
The bond enthalpies of H₂, X₂ and HX are in the ratio of 2 : 1 : 2. if the enthalpy for formation of HX is − 50 kJ mol⁻¹, the bond enthalpy of H₂ is -
A
200 kJ mol⁻¹
B
400 kJ mol⁻¹
C
100 kJ mol⁻¹
D
300 kJ mol⁻¹

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