1.

Enthalpy of formation of HF and HCl are -161 kJ and -92 kJ respectively. Which of the following statements is incorrect?

Answer»

HCL is more STABLE than HF
HF and HCl are exothermic compounds
the affinity of FLUORINE to hydrogen is GREATER than the affinity of chlorine to hydrogen than the affinity of chlorine to hydrogen
HF is more stable than HCl.

Solution :More the energy libertaed during the formation of one mole of a compound, more will be its stability
Or
Higher the enthalpy (-ve value) of formation of a compound greater will be stability of the compound. HF is more stable than HCl.


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