Asked by jojo
A scientist measures the standard enthalpy change for the following reaction to be -172.4 kJ :
2SO2(g) + O2(g) 2SO3(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of SO2(g) is what in kJ/mol?
2SO2(g) + O2(g) 2SO3(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of SO2(g) is what in kJ/mol?
Answers
Answered by
DrBob222
dHrxn = (n*dHf products) - (n*dHf reactants)
You know dHrxn and you can look up dHf O2 (it is zero) and SO3, calculate the only unknown of dHf SO2.
You know dHrxn and you can look up dHf O2 (it is zero) and SO3, calculate the only unknown of dHf SO2.