Hydrogen sulfide gas is a poisonous gas with asubstanial stench like that of rot

Question

Hydrogen sulfide gas is a poisonous gas with asubstanial stench like that of rotten eggs. It can be found innatural gas like that used in academic laboratories. Hydrogensulfide will burn in oxygen as shown below.

Calculate the standard enthalpy change for this reaction fromstandard enthalpies of formation. (in kJ)
2H2S(g)+ 3O2(g) yields 2SO2(g) + 2H2O(l) Hydrogen sulfide gas is a poisonous gas with asubstanial stench like that of rotten eggs. It can be found innatural gas like that used in academic laboratories. Hydrogensulfide will burn in oxygen as shown below.

Calculate the standard enthalpy change for this reaction fromstandard enthalpies of formation. (in kJ)
2H2S(g)+ 3O2(g) yields 2SO2(g) + 2H2O(l)

Explanation / Answer

2H2S(g)+ 3O2(g) -------> 2SO2(g) + 2H2O(l) : H =? H = H products - Hreactants       = ( 2 * HSO2 + 2 * H H2O ) - ( 2 * H2S + 3 * H O2 )       = ( 2 * -296.84KJ /mol  + 2 * -285.83 KJ / mol ) - ( 2* -20.63 KJ / mol + 3 * 0 KJ / mol )       = -1124.08 KJ / mol

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