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Characteristics of Chemical Equilibrium

For which of ...

Question

For which of the following reactions, the degree of dissociation cannot be calculated from the vapour density data
$I . 2 H I_{(g)} ⇌ H_{2 (g)} + I_{2 (g)}$
$I I . 2 N H_{3 (g)} ⇌ N_{2 (g)} + 3 H_{2 (g)}$
$I I I . 2 N O_{(g)} ⇌ N_{2 (g)} + O_{2 (g)}$
$I V . P C l_{5 (g)} ⇌ P C l_{3 (g)} + C l_{2 (g)}$

A

I and III

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B

II and IV

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C

I and II

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D

III and IV

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Solution

The correct option is A I and III
The degree of dissociation cannot be calculated from the vapour density data in reaction I and III Because here the number of moles remains unchanged $(Δ n = 0)$ before and after reaching equilibrium.

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Similar questions

Q. For which of the following reactions, the degree of dissociation cannot be calculated from the vapour density data

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)}

Q. For which of the following reactions, the degree of dissociation cannot be calculated from the vapour density data

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)}

Q. Consider following reaction in equilibrium with equilibrium concentration 0.01 M of every species
(I)

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

2 H I (g) ⇌ H_{2} (g) + I_{2} (g)

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

Extend of the reaction taking place is:

Q. Consider following reactions in equilibrium with equilibrium concentration

0.01 M

of every species.
(I)

P C l_{s} (g) ⇌ {P C l}_{3} (g) + C l_{2} (g)

{2 H I (g) ⇋ H}_{2} (g) + l_{2} (g)

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

Extent of the reactions taking place is:

K_{1}

K_{2}

are equilibrium constants for reaction (i) and (ii)

N_{2} (g) + O_{2} (g) ⇌ 2 N O (g)

N O (g) ⇌ N_{2} (g) + \frac{1}{2} O_{2} (g)

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Characteristics of Chemical Equilibrium

Standard XII Chemistry

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