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Thermodynamic Processes

For which of ...

Question

For which of the following reaction $△ H = △ E + 2 R T$

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

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N_{2} (g) + O_{2} (g) \to 2 N O (g)

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{N H}_{4} H S (s) \to {N H}_{3} (g) + H_{2} S (g)

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P {C l}_{5} (g) \to P C l_{3} (g) + {C l}_{2} (g)

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Solution

The correct option is D ${N H}_{4} H S (s) \to {N H}_{3} (g) + H_{2} S (g)$
$Δ H = Δ E + Δ n_{g a s} R T$
Comparing with $Δ H = Δ E + 2 R T$
$Δ n_{g a s} = 2$
$1 \to Δ n_{g a s} = 2 - 1 - 3 = (- 2)$
$2 \to Δ n_{g a s} = 2 - 1 - 1 = 0$
$3 \to Δ n_{g a s} = 1 + 1 - 0 = 2$
$4 \to Δ n_{g a s} = 1 + 1 - 1 = 1$

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Similar questions

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

N_{2} (g) + O_{2} (g) ⇌ 2 N O (g)

P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)

2 H I_{(g)} ⟶ H_{2 (g)} + I_{2 (g)}

2 N H_{3 (g)} ⟶ N_{2 (g)} + 3 H_{2 (g)}

2 N O_{(g)} ⟶ N_{2 (g)} + O_{2 (g)}

P C l_{5 (g)} ⟶ P C l_{3 (g)} + C l_{2 (g)}

C (s) + O_{2} (g) ⟶ C O_{2} (g)

Δ H = Δ U + R T

N_{2} (g) + 3 H_{2} (g) ⟶ 2 N H_{3} (g)

Δ H = Δ U

N H_{4} H S (s) ⟶ N H_{3} (g) + H_{2} S (g)

Δ H = Δ U - 2 R T

P C l_{5} (g) ⟶ P C l_{3} (g) + C l_{2} (g)

Δ H = Δ U + 2 R T

2 S O_{2} (g) + O_{2} (g) ⟶ 2 S O_{3} (g)

Δ H = Δ U - R T

C (s) + O_{2} (g) ⟶ C O_{2} (g)

Δ H = Δ U + R T

N_{2} (g) + 3 H_{2} (g) ⟶ 2 N H_{3} (g)

Δ H = Δ U

N H_{4} H S (s) ⟶ N H_{3} (g) + H_{2} S (g)

Δ H = Δ U - 2 R T

P C l_{5} (g) ⟶ P C l_{3} (g) + C l_{2} (g)

Δ H = Δ U + 2 R T

2 S O_{2} (g) + O_{2} (g) ⟶ 2 S O_{3} (g)

Δ H = Δ U - R T

I . 2 H I_{(g)} ⇌ H_{2 (g)} + I_{2 (g)}

I I . 2 N H_{3 (g)} ⇌ N_{2 (g)} + 3 H_{2 (g)}

I I I . 2 N O_{(g)} ⇌ N_{2 (g)} + O_{2 (g)}

I V . P C l_{5 (g)} ⇌ P C l_{3 (g)} + C l_{2 (g)}

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