Question

# Use standard enthalpies of formation to calculate ΔH∘rxn for the following reaction: SO2(g)+12O2(g)→SO3(g) ΔH∘rxn =

Use standard enthalpies of formation to calculate ΔH∘rxn for the following reaction: SO2(g)+12O2(g)→SO3(g) ΔH∘rxn =

Solution :-

formula to calculate the delta H rxn is as follows

Delta H rxn = sum of delta H product – sum of delta H reactant

= [SO3*1] - [SO2*1]

= [-396*1] -[-296.8*1]

= -99.2 kJ

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