Answer to Question #292772 in Physical Chemistry for Tobbsman

Question

If 17.3g of powdered aluminium are allowed to react with excess Fe2O3, how much heat is produced?

Answer 1

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

{(−1669)−(−822)}⋅kJ⋅mol^-1

=−847⋅kJ⋅mol^-1.

ΔH°rxn=−847⋅kJ⋅mol^-1 .

=-847x (17.3 g/2*26.98g)

=-271.555J