Question

Calculate the enthalpy change for the ionization of 1 mol of hydrogen chloride gas at standard conditions, given that the enthalpy change for the reaction HCl(g) → H+(aq) + Cl-(aq) is -74.8 kJ/mol.

Answer 1

The enthalpy change for the ionization of 1 mol of hydrogen chloride gas at standard conditions is given by the enthalpy change for the reaction HCl g   H+ aq  + Cl- aq , which is -74.8 kJ/mol. Therefore, the enthalpy change for the ionization of 1 mol of HCl g  is -74.8 kJ/mol.