Given the thermochemical equation
2SO2(g) + O2 SO3(g) ---> ∆H= -198.2 kJ/mol
Calculate the heat evolved when 87.9 g of SO2 (molar mass 64.07 g/mol) is convertedto SO3.
The conversion of 87.9g (1 mole) of SO₂ to SO₃ involves -198.2 kJ/mol of heat
Heat evolved when 87.9g of SO₂ in converted to SO₃ is given by:
Therefore the heat evolved is