The standard enthalpy of formation of FeO and Fe_(2)O_(3) is -65kcal mol^(-1) and -197kcal mol^(-1) respectively. A mixture of two oxides contains FeO and Fe_(2)O_(3) in the mole ratio 2:1. If by oxidation, it is changed into a 1:2 mole ratio mixture, how much of thermal energy will be released per mole of initial mixture ?

The standard enthalpy of formation of FeO and Fe_(2)O_(3) is -65kcal m

1.	The standard enthalpy of formation of FeO and Fe_(2)O_(3) is -65kcal mol^(-1) and -197kcal mol^(-1) respectively. A mixture of two oxides contains FeO and Fe_(2)O_(3) in the mole ratio 2:1. If by oxidation, it is changed into a 1:2 mole ratio mixture, how much of thermal energy will be released per mole of initial mixture ?
Answer» ANSWER :`-13.4kcal MOL^(-1)`