# Problem: S(s) + O2(g) → SO2 (g)      ∆H = ‐296.8 kJ2SO2 + O2 → 2SO3             ∆H = ‐198.4 kJWrite the equation for the formation of sulfur trioxide gas from sulfur solid and oxygen. What is the ∆H of that equation?

###### Problem Details

S(s) + O2(g) → SO2 (g)      ∆H = ‐296.8 kJ

2SO2 + O2 → 2SO3             ∆H = ‐198.4 kJ

Write the equation for the formation of sulfur trioxide gas from sulfur solid and oxygen. What is the ∆H of that equation?

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 ofS(s) + O2(g) → SO2 (g)      ∆H = ‐296.8 kJ2SO2 + O2 → 2SO3  ...as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Sabrina took 4 minutes and 51 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 Bindell's class at UCF.