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System, Surroundings, Intensive, Extensive Properties

23. The entha...

Question

23. The enthalpy change (H) for the reaction, N2(g) + 3H2(g) 2NH3(g) is –92.38 kJ at 298 K. What is U at 298 K?

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(△ H)

N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g)

△ U

(Δ H)

N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g)

- 92.38 k J

298 K

Δ U

298 K

(Δ H)

N_{2} (g) + {3 H}_{2} (g) ⟶ {2 N H}_{3} (g)

- 92.38 k J

298 K .

Δ U

298 K

N H_{2} C N (s)

△ U

- 742.7 k J m o l^{- 1}

N H_{2} C N (g) + \frac{3}{2} O_{2} (g) \to N_{2} (g) + C O_{2} (g) + H_{2} O (l)

N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g)

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