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Heat of reaction for C(6)H(12)O(6(s))+6O...

Heat of reaction for `C_(6)H_(12)O_(6(s))+6O_(2(g)) rarr 6CO_(2(g))+6H_(2)O_(v)` at constant pressure is `-651 kcal` at `17^(@)C`. Calculate the heat of reaction at constant volume at `17^(@)C`.

Text Solution

Verified by Experts

`DeltaH = DeltaE + DeltanRT` and `DeltaH = -651 xx 10^(3)` cal
R = 2cal
T= 290 K
and `Deltan = 6+6-6=6`
`therefore -651 xx 10^(3) = DeltaE + 6 xx 2 xx 290`
or `DeltaE = 654480 cal = -654.48` kcal.
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