# 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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###### FREE Expert Solution ###### 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)

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Hess's Law concept. You can view video lessons to learn Hess's Law. Or if you need more Hess's Law practice, you can also practice Hess's Law practice problems.

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Our tutors rated the difficulty ofGiven that H2 (g) + F2 (g) → 2HF (g)     ΔH°rxn = - 546.6 kJ...as medium difficulty.

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Hascall's class at NAU.