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If DeltaG=-177 kcal for " ...

If `DeltaG=-177 kcal` for
`" "(1)2Fe(s)+(3)/(2)O_(2)toFe_(2)O_(3)(s)`
and `DeltaG=-19 k cal` for
`" "(2)4FeO_(3)(s)+Fe(s)to3Fe_(3)O_(4)(s)`
What is the Gibbs free energy of formation of `Fe_(3)O_(4)`?

A

`+ 229.6` kcal/ mol

B

`-242.3` kcal/mol

C

`727` kcal/mol

D

`-229.6` kcal/mol

Text Solution

Verified by Experts

The correct Answer is:
B
`-242.3` kcal/mol
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