Q.

3O2(g)2O3(g)

For the above reaction at 298 K, Kc is found to be 3.0×10-59. If the concentration of O2 at equilibrium is 0.040 M, then the concentration of O3 in M is                                 [2022]

1 4.38×10-32  
2 1.9×10-63  
3 2.4×1031  
4 1.2×1021  

Ans.

(1)

 3O2(g)2O3(g)Initial conc.10At equilibrium1-3x2x

Kc=[O3]2[O2]3=3×10-59

Given: [O2]=0.040 M

Kc=[O3]2(0.040)3=3×10-59

[O3]2=1.92×10-63

[O3]=4.38×10-32M