Hess' Law Please Help!?

  • Thread starter Thread starter Ashley
  • Start date Start date
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Ashley

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Calculate the heat evolved from a mixture of
13.8 L of sulfur dioxide at 0.7 atm and 297 K
and 16 g of oxygen if the following reaction
occurs:
2 SO2(g) + O2(g) −! 2 SO3(g)
DeltaH◦ = −198 kJ
Answer in units of kJ.


Since it's not at STP I have no clue how to do it. Please help!
 
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