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(Delta H - Delta U) for the formation of...

`(Delta H - Delta U)` for the formation of carbon monoxide `(CO)` from its elements at `298K` is
`(R = 8.314 K^(-1)mol^(-1))`

A

`1238.78 J mol^(-1)`

B

`2477.57 J mol^(-1)`

C

`2477.57 J mol^(-1)`

D

`-1238.78 J mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaH-DeltaU= Deltan_(g)"RT"" "C(s) + 1//2 O_(2)(g)rarr Co(g)`
`DeltaN_(g) = 1 -(1)/(2) =+(1)/(2) " "DeltaH-DeltaU =(1)/(2) xx 8.314 xx 298 = 1238.78 J mol^(-1)`
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