Given the thermochemical equation 2SO₂ + O₂ $\rarr$ 2SO₃, $\Delta$H°_rxn = -198 kJ/mol, what is the standard enthalpy change for the decomposition of one mole of SO₃?

Question

Quizplus · Accepted Answer

The decomposition of one mole of SO₃ is the reverse of the formation of two moles of SO₃. Therefore, the enthalpy change is half of the reverse reaction, which is +99 kJ/mol.

Given the Thermochemical Equation 2SO2 + O2 →\rarr→ 2SO3 Δ\DeltaΔ H°rxn = -198 KJ/mol, What Is the Standard Enthalpy Change

Given the Thermochemical Equation 2SO₂ + O₂ $\rarr$ 2SO₃ $\Delta$ H°_rxn = -198 KJ/mol, What Is the Standard Enthalpy Change