Answer to Question #112986 in General Chemistry for c15

Question

Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Refer to the ΔG°f values.

Fe2O3(s)+2Al(s)⟶Al2O3(s)+2Fe(s)

Answer 1

Fe2O3(s)+2Al(s)⟶Al2O3(s)+2Fe(s)

Fe = 0 kJ/mol

Al = 0 kJ/mol

Fe2O3 = -1576.4 kJ/mol

Al2O3 = -741 kJ/mol

(https://demo.webassign.net/question_assets/chang11/supplemental_data.pdf)

-1576.4 - (-741.0) = -835.4 kJ/mol - standard change in Gibbs free energy for the reaction at 25 °C.