Calculate for chloride ion from the following data : (Roorkhee 1992)

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

Calculate ΔHf∘\Delta H_f^\circ for chloride ion from the following data : 12H2(g)+12Cl2(g)⟶HCl(g);ΔHf∘=−92.4 kJ\frac{1}{2}H_2(g) + \frac{1}{2}Cl_2(g) \longrightarrow HCl(g); \quad \Delta H_f^\circ = -92.4 \text{ kJ} HCl(g)+nH2O⟶H+(aq.)+Cl−(aq.);ΔHf∘=−748 kJHCl(g) + nH_2O \longrightarrow H^+(aq.) + Cl^-(aq.); \quad \Delta H_f^\circ = -748 \text{ kJ} ΔHf∘H+(aq.)=0.0 kJ\Delta H_f^\circ H^+(aq.) = 0.0 \text{ kJ} (Roorkhee 1992)

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