During Volcanic Eruptions, Hydrogen Sulfide Gas Is Given Off and Oxidized

During volcanic eruptions, hydrogen sulfide gas is given off and oxidized by air according to the following chemical equation: 2H₂S(g) + 3O₂(g) $\rarr$ 2SO₂(g) + 2H₂O(g)
Calculate the standard enthalpy change for the above reaction given:
3S(s) + 2H₂O(g) $\rarr$ 2H₂S(g) + SO₂(g) $\Delta$ H° = 146.9 kJ/mol
S(s) + O₂(g) $\rarr$ SO₂(g) $\Delta$ H° = -296.4 kJ/mol

A) -1036.1 kJ/mol
B) -742.3 kJ/mol
C) -149.5 kJ/mol
D) 443.3 kJ/mol
E) 742.3 kJ/mol

Correct Answer:

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