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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

`2477.57mol^(-1)`

B

`-1238.78Jmol^(-1)`

C

`1238.78Jmol^(-1)`

D

`-2477.57Jmol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`C+1//2O_(2)rarrCO`
`:. DeltaH-DeltaU=DeltanRT`
`=-(1)/(2)xx8.314xx298`
`=- 1238.78J"mol"^(-1)`
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