Chemistry Practice Problems Hess's Law Practice Problems Solution: S(s) + O2(g) → SO2 (g)      ∆H = ‐296.8 kJ 2SO2 +...

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Solution: 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?    

Problem

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?