Chemistry∆ H – ∆ U for the formation of carbon monoxide (CO) from its elements at 298 K is (R = 8.314 J K – 1 mol – 1 )

H-U for the formation of carbon monoxide (CO) from its elements at 298 K is 

(R = 8.314 J K-1mol-1)

  1. A
    2477.57 J mol-1
  2. B
    -1238.78 J mol-1
  3. C
    1238.78 J mol-1
  4. D
    -2477.57 J mol-1

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    Solution:

    C+12 O2CO  H-U=nRT =-12 × 8.314 × =-1238.78 J mol-1

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