1.

Given (at 25^(@)C): 2FeSO_(4)(s)toFe_(2)O_(3)(s)+SO_(2)(g)+SO_(3)(g),DeltaH^(0)=340.1kJ 2Fe(s)+(3)/(2)O_(2)(g)toFe_(2)O_(3)(s),DeltaH^(0)=-824.2kJ S(s, rhombic)+O_(2)(g)toSO_(2)(g),DeltaH^(0)=-296.8kJ SO_(2)(g)+(1)/(2)O_(2)(g)toSO_(3)(g),DeltaH^(0)=-98.9kJ Heat of formation (in kJ mol^(-1)) of FeSO_(4)(s) at 25^(@)C is-

Answer»

`-879.9`
`-789.6`
`-976.5`
`-928.4`

ANSWER :D


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