Which of the reaction defines - H f - A- 1-2 H 2 g -1-2 F 2 g - HF g B- CO g -1-2 O 2 g - CO 2 g C- C diamond - O 2 g - CO 2 g D- N 2 g -3 H 2 g - 2 NH 3 g

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Heat of Formation

Which of the ...

Question

Which of the reaction defines $Δ H_{f}^{\circ}$

C_{(d i a m o n d)} + O_{2} (g) \to C O_{2} (g)

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\frac{1}{2} H_{2} (g) + \frac{1}{2} F_{2} (g) \to H F (g)

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

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C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g)

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Which of the reaction defines $Δ H_{f}^{0}$ ?

△ H > △ U

N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g); K_{1}

N_{2} (g) + O_{2} (g) ⇌ 2 N O (g), K_{2}

H_{2} (g) + \frac{1}{2} O_{2} (g) ⇌ H_{2} O (g); K_{3}

2 N H_{3} (g) + \frac{5}{2} O_{2} (g) ⇌ 2 N O (g) + 3 H_{2} O (g)

N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g); K_{1}

N_{2} (g) + O_{2} (g) ⇌ 2 N O (g); K_{2}

H_{2} (g) + \frac{1}{2} O_{2} (g) ⇌ H_{2} O (g); K_{3}

2 N H_{2} (g) + \frac{5}{2} O_{2} (g) ⇌ 2 N O (g) + 3 H_{2} O (g)

Δ G^{o}

\frac{1}{2} N_{2} (g) + \frac{3}{2} H_{2} (g) ⇌ {N H}_{3} (g)

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

K_{p}

25^{o} C

K_{p}

Δ G^{o}

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

25^{o} C

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