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At constant volume and at 298 K, the hea...

At constant volume and at `298 K`, the heat of combustion of sucrose `[C_(12)H_(22)O_(11) (s)]` is `-1348.9` kcal `mol^(-1)`. If steam is produced during the combuston, the heat of reaction at constant pressure will be

A

`-1355.46` Kcal

B

`+1355.46` Kcal

C

`-1342.34` Kcal

D

`+1342.344` cal

Text Solution

Verified by Experts

The correct Answer is:
C
`C_(12)H_(22)O_(11(s))+12O_(2(g))rarr12CO_(2(g))+11H_(2)O_((g))`
`DeltaH=DeltaU+DeltanRT`
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