In which of the following reactions- - H - - U-

The correct options are A PCl_5(g)→ PCl_3(g) + Cl_2(g) C 2H_2O_2(l)→ 2H_2O(l) + O_2(g) As we know, Δ H = Δ U + Δ nRT , where Δ n = n_P n_R ...

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Difference between Internal Energy and Enthalpy

In which of t...

Question

In which of the following reactions, $Δ H > Δ U$ ?

H_{2} (g) + I_{2} (g) \to 2 H I (g)

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

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2 H_{2} O_{2} (l) \to 2 H_{2} O (l) + O_{2} (g)

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C (s) + O_{2} (g) \to C O_{2} (g)

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Δ H > Δ U

Δ H < Δ U

C (g r a p h i t e) + O_{2} (g) ⟶ C O_{2} (g)

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

2 H_{2} O_{2} (l) \to 2 H_{2} O (l) + O_{2} (g)

Δ H

Δ U

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

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