1.

(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))

Answer»

`1238.78 J mol^(-1)`
`- 2477.57 J mol^(-1)`
`2477.57 J mol^(-1)`
`- 1238.78 J mol^(-1)`

SOLUTION :`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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