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The heat of reaction for, C(10)H(8)+12O(...

The heat of reaction for, `C_(10)H_(8)+12O_(2(g)) rarr 10CO_(2(g))+4H_(2)O_((l))` at constant volume is `-1228.2 kcal` at `25^(@)C`. Calculate the heat of reaction at constant pressure at `25^(@)C`.

Text Solution

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`Deltan_((g))=10-12=-2 DeltaH=DeltaU+Deltan_(g)RT`
`=-1228.2xx10^(3)+(-2)(2)xx298`
`=-1464014.4cal=-1464.01k.cal`
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