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Calculate standard enthalpy of reaction ...

Calculate standard enthalpy of reaction at `25^(@)C` for the reaction: `C Cl_(4)(g)+2H_(2)O(g)toCO_(2)(g)+4HC l(g)`. Given: The standard heat of formation of `C Cl_(4)(g),H_(2)O(g),CO_(2)(g) and HC l(g)` are `-25.5,-57.8,-94.1 and -22.1kcal*mol^(-1)`.

Text Solution

Verified by Experts

The standard heat of reaction for the given reaction,
`DeltaH^(0)=DeltaH_(f)^(0)[CO_(2)(g)]+4xxDeltaH_(f)^(0)[HCl(g)]-DeltaH_(f)^(0)[C Cl_(4)(g)]-2xxDeltaH_(f)^(0)[H_(2)O(g)]`
`=-94.1+4xx(-22.1)-(-25.5)-2xx(-57.8)`
`=41.4kcal`.
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