Thermodynamics

Thermodynamics

Question

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

  • –1238.78 J mol–1

  • 1238.78 J mol–1

  • –2477.57 J mol–1

  • 2477.57 J mol–1

Answer

A.

–1238.78 J mol–1

∆H −∆U =∆ngRT
= (-1 x 8.314 x 298)/2
= - 1238.78

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