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Calculate the standard enthalpy of the reactionHrxnfor the thermite reaction:

2Al(s) + Fe2O3(s)------>2Fe(s)+ Al2O3(s)

Elements in their standard state have an enthalpy of formationvalue of zero. The standard enthalpies of formation of Fe2O3 andAl2O3 are:

H ofFe2O3(s) = -825.5 kJ/mol

H ofAl2O3(s) = -1675 kJ/mol

Express your answer to three significant figures and includeappropriate units.

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Deanna HettingerLv2
3 May 2019
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Related questions

Calculate the enthalpy change for the thermite reaction:

2Al(s) + Fe2O3(S) ------> 2Fe(s) + Al2O3(s),Hrxn =-850kJ

when 10.0 mol of Al undergoes the reaction with astoichiometrically equivalent amount of Fe2O3.

Express your answer to three significant figures.

I need help solving this problem -- I have already entered in −4250kJ , and −6800kJ and were WRONG answers.

QUESTION: Calculate the enthalpy change for the thermite reaction: 2Al(s)+Fe2O3(s)→2Fe(s)+Al2O3(s), ΔH∘rxn=−850 kJ when 8.00 mol of Al undergoes the reaction with a stoichiometrically equivalent amount of Fe2O3.


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