During volcanic eruptions, hydrogen sulfide gas is given *** and oxidized by air according to the following chemical equation:
2H2S(g) + 3O2(g) →2SO2(g) + 2H2O(g)
Calculate the standard enthalpy change for the above reaction given:
3S() + 2H2O(g) →* 2H2S(g) + SO2(g) ΔH° = 146.9 kJ/mol
() + O2(g) → SO2(g) ΔH° = –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
