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Enthalpies of formation of CO(g), CO(2)(...

Enthalpies of formation of CO(g), `CO_(2)(g),N_(2)O(g) and N_(2)O_(4)(g)` are -110, -393.81 and 9.7 kJ `mol^(-1)` respectively. Find the value of `D_(r)H` for the reaction:
`N_(2)O_(4)(g)+3CO(g)toN_(2)O(g)+3CO_(2)(g)`

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Verified by Experts

`N_(2)O_(4)(g)+3CO(g) to N_(2)O(g)+3CO_(2)(g)`
`triangleH`= sum of enthalpies of products
sum of enthalpies of reactants
=-1017-(-320.3)
`triangleH=-696.7kJ`
`triangleH_(CO)=-110kJ`
`triangleH_(CO_(2))=-393KJ`
`triangleH_(N_(2)O)=-81KJ`
`triangleH_(N_(2)O_(4))=-9.7KJ`
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