Problem: Thermodynamic Quantities for Selected Substances at 298.15 KSubstanceHfo (kJ/mol)NO(g)90.37NO2(g)33.84N2O(g)81.6N2O4(g)9.66SO2(g)-296.9SO3(g)-395.2NaBr(s)-361.4NaBr(aq)-360.6Pb(NO3)2(s)-451.9Pb(NO3)2(aq)-421.3Write a balanced equation depicting the formation of one mole of SO3(g) from its elements in their standard states.

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We are asked to write a balanced equation depicting the formation of one mole of SO3(g) from its elements in their standard states..

Standard states: 

S → S(s)

O → O2(g) 


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Problem Details

Thermodynamic Quantities for Selected Substances at 298.15 K

SubstanceHfo (kJ/mol)
NO(g)90.37
NO2(g)33.84
N2O(g)81.6
N2O4(g)9.66
SO2(g)-296.9
SO3(g)-395.2
NaBr(s)-361.4
NaBr(aq)-360.6
Pb(NO3)2(s)-451.9
Pb(NO3)2(aq)-421.3


Write a balanced equation depicting the formation of one mole of SO3(g) from its elements in their standard states.

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