Answer to Question #232107 in Inorganic Chemistry for Sire

Question

Calculate the standard change enthalpy of the given reaction using the standard enthalpies of formation:

2H₂S_(g)+3O₂→2SO_2(g)+2H₂O(g)

Answer 1

For the following reaction 

2H₂S (g) + 3O₂ (g) → 2H₂O (l) + 2SO₂ (g) 

Calculate ΔH° from the given data. Is the reaction exothermic or endothermic? 

ΔH°_f (H₂S) = -20.15 kJ/mol; ΔH°_f (O₂) = 0 kJ/, mol; ΔH°_f (H₂O) = -285.8 kJ/mol; ΔH°_f (SO₂) = -296.4 kJ/mol