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

`(Delta U - Delta H)` for the formation of carbon monoxide (CO) from its elements of 298 K is `(R = 8.314 JK^(-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
`C(s) + (1)/(2) O_(2)(g) rarr CO(g)`
`Delta H = Delta U + Delta n_(g) RT`
`(Delta H - Delta U) = (1)/(2) xx 8.314 xx 298`
`= 1238.75 J mol^(-1)`.
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