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Question: Answered & Verified by Expert

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 concentration of O3 in M is

ChemistryChemical EquilibriumNEETNEET 2022 (Phase 1)
Options:
  • A 1.9×10-63
  • B 2.4×1031
  • C 1.2×1021
  • D 4.38×10-32
Solution:
2448 Upvotes Verified Answer
The correct answer is: 4.38×10-32

Kc=3.0×10-59
O2g=4×10-2.
The given reaction 3O2g2O3g
Kc=product of molar concentration of productsproduct of molar concentration of reactants=O3g2O2g3 

Put all the given values in the expression of Kc

3.0×10-59=O3g24×10-23
[O3(g)]2=3.0×10-59×(4×10-2)3
O3g2=192×10-65
Hence, the concentration of O3 = 4.38×10-32 M

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