NCERT Class XI Chemistry Equilibrium Solutions

Question : 33

Total: 73

The value of Kc for the reaction 3O2(g) ⇌ 2O3(g) is 2.0 × 10–50 at 25°C. If the equilibrium concentration of O2 in air at 25°C is 1.6 × 10–2, what is the concentration of O3?

Solution:

3O2(g) ⇌ 2O3(g)
Kc =

[O3]2

[O2]3

⇒ 2.0 × 10−50 =

[O3]2

(1.6×10−2)3

[O3]2 = 2.0 × 10−50 × (1.6)2×10−6
[O3] = √2.0×(1.6)3×10−28 = √3.2×(1.6)2×10−.28
= 1.6 × 10−28√3.2 = 1.6 × 1.79 × 10−28 = 2.864 × 10–28‌mol‌L–1

Go to Question:

Prev Question

Next Question