Problem: Given that H2 (g) + F2 (g) → 2HF (g)     ΔH°rxn = - 546.6 kJ 2H2 (g) + O2 (g) → 2H2O (l)     ΔH°rxn = - 571.6 kJ calculate the value of ΔH°rxn for 2F2 (g) + 2H2O (l) → 4HF (g) + O2 (g) 

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Problem Details

Given that 

H2 (g) + F2 (g) → 2HF (g)     ΔH°rxn = - 546.6 kJ 

2H2 (g) + O2 (g) → 2H2O (l)     ΔH°rxn = - 571.6 kJ 

calculate the value of ΔH°rxn for 

2F2 (g) + 2H2O (l) → 4HF (g) + O2 (g) 

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