# Problem: H2(g) + F2(g) → 2HF (g)           ΔH rxn = -546.6 kJ2H2(g) + O2(g) → 2H2O (l)       ΔH rxn = -571.6 kJCalculate the value of  ΔHrxn for:2F2(g) + 2H2O(l) → 4HF(g) + O2(g)

88% (33 ratings)
###### Problem Details

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  ΔHrxn 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.

What is the difficulty of this problem?

Our tutors rated the difficulty ofH2(g) + F2(g) → 2HF (g)           ΔH rxn = -546.6 kJ2H2(g) +...as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Sabrina took 5 minutes and 4 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

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