Textbook Question
Use average bond enthalpies from Table 8.4 to estimate
the enthalpies of the following gas-phase reactions:
Reaction 1: HF1g2 + H2O1g2 Δ F-1g2 + H3O+1g2
Reaction 2: HCl1g2 + H2O1g2 Δ Cl-1g2 + H3O+1g2
Are both reactions exothermic? How do these values relate to
the different strengths of hydrofluoric and hydrochloric acid?

