Enthalpy of formation of HF and HCl are -161kj and -92kj respectively, which one is a more stable compound and why
Heat of formation may be positive or negative.
If ΔH is positive it is exothermic.
If ΔH is negative it is endothermic.
Stability of exothermic compound is more than that of endothermic compound, therefore greater the liberated energy greater is the stability.
Here, Enthalpy of formation of HF is -161kj and HCl is -92kj
Hence, HF is more stable than HCl.
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