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For the reaction 2 CO (g) + O 2 (g) → 2 CO 2 ​ ; ΔH = − 500 kJ . Two moles of CO and one mole of O 2 are taken in a container of volume 2 L . They completely form two moles of C O 2 , the gas deviate appreciably from ideal behaviour. If pressure in vessel change from 35 to 20 atm . Find the magnitude of Δ U a t 500 K . (Assume 1 L-atm = 0 .1 kJ)

Options

  1. A503 kJ
  2. B400 kJ
  3. C480 kJ
  4. D320 kJ

Correct answer

A. 503 kJ

Step-by-step solution

Δ U = Δ H - V Δ P Δ U = - 500 - 2 × 35 - 20 × 0.1 = − 503 kJ

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