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    Basically its last question of my prep and I have tried but nothing makes sence, please can someone help me.

    calculate the standard enthalpy change in the reaction

    SO2 + 2H2S = 3S + 2H20

    The standard enthalpy of cumbustion of sulphur is -297 and the standard enthalpies of formation of hydrogen sulpide is -20.1 and standard enthalpy of formation of water is -286

    Thanks
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    Assume standard enthalpy of combustion of sulfur = standard enthalpy of formation of SO2
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    And don't forget enthalpy of formation for elements is 0!

    Use delta H= (delta Hf final) - (delta Hf initial)
 
 
 
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