When hydrogen sulfide gas, H2S(g), reacts with oxygen gas, O2(g) , sulfur dioxide gas, SO2(g), and steam, H2O(g), are produced. This is given by:
2H2S(g)+3O2(g)→2H2O(g)+2SO2(g)
Use the table of standard enthalpies of formation to calculate the standard change in enthalpy of the given reaction.