Calculate ΔHf°(SO3) from the following information.
S(s) + O2(g) → SO2(g) ΔHrxn° = -296.8 kJ
SO2(g) + 1/2 O2(g) → SO3(g) ΔHrxn° = -98.9 kJ
Solution: ( -395.7 kJ)
Calculation:
The given reactions are:
S(s) + O2(g) → SO2(g) ΔHrxn° = -296.8 kJ
SO2(g) + 1/2 O2(g) → SO3(g) ΔHrxn° = -98.9 kJ
Adding both equations, we get,
S (s) + 3/2 O2 (g) = SO3(g) , ΔHf° = (-296.8 kJ - 98.9 kJ)
ΔHf° (SO3) = - 296.8 kJ - 98.9 kJ = - 395.7 kJ
Calculate ΔHf°(SO3) from the following information. S(s) + O2(g) → SO2(g) ΔHrxn° = -296.8 kJ SO2(g)...
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