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Posted by on Monday, May 5, 2014 at 5:39pm.

Given the thermochemical equation 2SO2 + O2 → 2SO3, ΔH°rxn = -198 kJ/mol, what is the standard enthalpy change for the decomposition of one mole of SO3?

  • Chemistry - , Monday, May 5, 2014 at 6:08pm

    You want 1 mol SO3 and not 2 so divide by 2. You want the reverse so change the sign.

  • Chemistry - , Wednesday, April 20, 2016 at 11:31am

    99 kJ/mol

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