Which of the following is not a physical equilibrium ?

Question

Which of the following is not a physical equilibrium ? (A) Ice leftharpoons Water (B) I 2(s) leftharpoons I 2(g) (C) S (l) leftharpoons S (g) (D) 3 O 2 leftharpoons 2 O 3

Tardigrade Admin · Accepted Answer

When a compound or element exists in different phases (states), a physical equilibrium exists between them.

(a)

(solid state of H_{2} O) Ice (liquid state of H_{2} O) Water

(physical equilibrium)

(b)

I_{2} (s) ⇌ I_{2} (g)

(physical equilibrium)

(c)

S (l) ⇌ S (g)

(physical equilibrium)

(d)

3 O_{2} (g) ⇌ 2 O_{3} (g)

O_{2}

and

O_{3}

are the allotropes of oxygen, ie, have different composition, so the equilibrium exist between them is considered as chemical equilibrium.

Q. Which of the following is not a physical equilibrium ?

Ice $⇌$ Water

$I_{2} (s) ⇌ I_{2} (g)$

$S (l) ⇌ S (g)$

$3 O_{2} ⇌ 2 O_{3}$

Q. Which of the following is not a physical equilibrium ?

Ice ⇌ Water

I2​(s)⇌I2​(g)

S(l)⇌S(g)

3O2​⇌2O3​

Ice $⇌$ Water

$I_{2} (s) ⇌ I_{2} (g)$

$S (l) ⇌ S (g)$

$3 O_{2} ⇌ 2 O_{3}$