Answer to Question #205202 in Molecular Physics | Thermodynamics for Ankush

Question

Calculate delta H degree for the process

2Al(s)+Fe2O3(s)=Al2O3(s)+2Fe(s)

Given that delta Hf degree of Fe2O3=-813.0KJ/mole and delta Hf degree of Al2O3 is -1655.0KJ/mole

Answer 1

delta H degree for the process = Hf(products) - Hf(reagents) = Hf(Al2O3) - Hf(Fe2O3) = - 1655 - (-813) = - 842 KJ/mole